# A002074 (b-file synthesized from sequence entry) 0 1 1 5 2 35 3 225 4 67375 5 853125 6 955040625 7 1861234375 8 151365980390625 9 142468185234375 10 10686017754521484375 11 8684623124912109375 12 5398544111530990341796875 13 54231540104196533203125 14 1161721704933873029968505859375