# A090133 (b-file synthesized from sequence entry) 0 1 1 0 2 -5 3 20 4 -55 5 120 6 -205 7 220 8 145 9 -1680 10 5995 11 -15580 12 32345 13 -51480 14 44195 15 80620 16 -543455 17 1770720 18 -4365605 19 8608820 20 -12607255 21 7384920 22 33496595 23 -170910980 24 516160945 25 -1210088880 26 2259550795 27 -2987758780 28 653281145 29 12325669320