# A044045 (b-file synthesized from sequence entry) 0 0 1 1 2 2 3 6 4 19 5 71 6 274 7 1117 8 4650 9 19819 10 85710 11 375712 12 1664203 13 7439593 14 33515758 15 152019560 16 693625265 17 3181528275 18 14661581030 19 67850297506 20 315187646601 21 1469195636293 22 6869889703638 23 32215399021901 24 151467334017864 25 713881817440421 26 3372142139764434