# A052626 (b-file synthesized from sequence entry) 0 3 1 4 2 12 3 60 4 432 5 4080 6 47520 7 655200 8 10402560 9 186520320 10 3723148800 11 81829440000 12 1962948556800 13 51024208435200 14 1428503479603200 15 42852489039360000 16 1371237803679744000 17 46621373950255104000