The president of the International Olympic Committee, Lord Killanin, said today he is prepared to visit President Carter and Soviet leader Leonid Brezhnev in what is believed to be a last-ditch effort to get the Moscow Games back on track and prevent a wide-scale boycott by Western nations.

Killanin said he had some specific ideas but would not reveal them before seeing the two leaders. He said, "I will stress once again the position of the IOC and the purpose of the Olympic Games, which is to assemble the youth of the world in accordance with Olympic principles."

Speaking at a news conference at the end of three days of IOC executive board meetings, Killanin said he has received messages from Carter and Brezhnev.

He said the messages explained their political points of view, and, "having these communications, I felt I was quite entitled, if they wish to see me, to make myself available."

He added that he has no invitation from either leader yet and did not know when or if he might be able to see them.

Meanwhile, United States Olympic Committee President Robert Kane said after a meeting with Soviet officials that Moscow is considering not participating in the 1984 Summer Olympic Games scheduled for Los Angeles.

"The Russians indicated they had their trepidations about participation in those games," Kane said. "As I understood, the Russians have a real concern about participation, in what they consider to be a double-edged sword. In other words, the Americans do not participate in the 1980 Games so they entertain the question why should they participate in the 1984 Games?" s

But U.S. committee Secretary General Don Miller said the discussion was a "veiled consideration" and not a direct threat by the Soviets.

The nine-member IOC executive board has spent three days discussing the U.S. boycott of the moscow Games and ways to salvage the games by making them attractive to countries thinking of joining the boycott.

"I would be absolutely untruthful if I did not say that I am worried there won't be the top competition and this may well dissaude people for sporting reasons not to go," Killanin told a news conference.

Killanin also said countries that want to use their flags, emblems and anthems will be allowed to, and countries that do not want to, will not have to. This was in answer to a proposal to eliminate so-called "nationalistic symbols" in a move to encourage some governments to allow their athletes to compete.

While Killanin was giving his press conference, U.S. Olympic officials met for three hours with Soviet officials at a private party. The meeting was appartently pleasant.

Kane said that both sets of officials agreed to work to end the boycott drive by meeting with political leaders. Miller said he would be meeting with Lloyd Cutler, White House counsel in charge of coordinating the boycott drive.