72049domain: NAppears in sequencesa(n) = floor( n*(n-1)*(n-2)*(n-3)/22 ).at n=37A011932Expansion of 1/(1-x(1-12x)).at n=9A146084Number of partitions of 0 having positive part-sum <= n.at n=14A209536Number of rooted trees with n nodes such that no more than three isomorphic subtrees extend from the same node.at n=15A318850