# A023045 (b-file synthesized from sequence entry) 0 14833 1 148329 2 1616786 3 19104774 4 243511704 5 3332744760 6 48773612880 7 760381337520 8 12585067447680 9 220448163358080 10 4075249496774400 11 79300508301907200 12 1620482929875532800 13 34699018357638835200 14 777011144137311283200 15 18162481202288527104000