# A019176 (b-file synthesized from sequence entry) 3 0 4 1 5 4 6 4 7 6 8 20 9 40 10 94 11 238 12 541 13 1294 14 3360 15 8173 16 19987 17 51528 18 131436 19 334749 20 866390 21 2252976 22 5878486 23 15411939 24 40580608 25 107264611 26 284120728 27 754178471 28 2007015523 29 5349093515 30 14276197975 31 38168672182