# A215514 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 3 4 0 5 -10 6 90 7 112 8 -1680 9 5112 10 52920 11 -328504 12 -1255320 13 23508784 14 14510496 15 -1763573160 16 4091068800 17 159016114496 18 -879390741312 19 -16959317684096 20 164322768835200 21 2137075591340928 22 -32790836323453824 23 -310912999830134272 24 7354887176447775360