# A057831 (b-file synthesized from sequence entry) 1 1 2 5 3 25 4 125 5 625 6 925 7 3125 8 5675 9 15625 10 15845 11 70625 12 78125 13 390625 14 1223375 15 1953125 16 4328125 17 5328475 18 9765625