45953domain: NPropertiesPrimalityPrimeyesAppears in sequencesPrimes of the form 666*k - 1.at n=22A063472a(1) = 1, a(n+1) = least prime p > a(n) such that a(n) + p is a square.at n=22A178825The number of distinct positions on an infinite chessboard reachable by the (3,4)-leaper in <= n moves.at n=28A297741Prime numbersat n=4757