38952domain: NAppears in sequencesa(n) = Sum_{k|n} binomial(n-1,k-1).at n=20A271654Expansion of Product_{k>0} (1 - q^(3*k))^5/((1 - q^k)^3*(1 - q^(6*k))^2).at n=20A293423Number of 5-cycles in the n-polygon diagonal intersection graph.at n=33A300553Bitwise XOR (centrally aligned) of two consecutive terms of A122245.at n=4A376405