# A238936 (b-file synthesized from sequence entry) 1 1 2 6 3 36 4 216 5 1296 6 7776 7 46656 8 279936 9 1679616 10 2176782336 11 16926659444736 12 4738381338321616896 13 36845653286788892983296 14 17324272922341479351919144385642496