# A148016 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 3 4 8 5 17 6 46 7 117 8 337 9 954 10 2765 11 8334 12 25350 13 78302 14 244664 15 777806 16 2495210 17 8049224 18 26288829 19 86510067 20 286120463 21 952818316 22 3193840880 23 10759053541 24 36391963273 25 123723824745 26 422498010677 27 1447387300427 28 4976890447866 29 17175794352740 30 59448688148611 31 206336010280396 32 718237279107642