58264domain: NAppears in sequencesFrom a nim-like game.at n=41A003413Number of subsets of {1,2,3,...,n} that sum to 0 mod 9.at n=19A068030a(n) is the number of transitive generalized signotopes.at n=3A358471Positions of powerful terms among the numbers satisfying Euler's condition for odd perfect numbers (A228058).at n=16A388279