# A099450 (b-file synthesized from sequence entry) 0 1 1 5 2 18 3 55 4 149 5 360 6 757 7 1265 8 1026 9 -3725 10 -25807 11 -102960 12 -334151 13 -950035 14 -2411118 15 -5405345 16 -10148899 17 -12907080 18 6506893 19 122884025 20 568871874 21 1984171195 22 5938752857 23 15804565920 24 37451559601 25 76625836565 26 120968265618 27 68460472135 28 -504475498651