# A002226 (b-file synthesized from sequence entry) 1 151 2 431 3 6581 4 67651 5 241981 6 2081921 7 3395921 8 116900011 9 650086271 10 858613901 11 11736494711 12 50888057851 13 303855349271 14 2459339487751 15 3167880361091