# A005799 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 10 4 104 5 1816 6 47312 7 1714000 8 82285184 9 5052370816 10 386051862272 11 35917232669440 12 3996998043812864 13 524203898507631616 14 80011968856686405632 15 14061403972845412526080 16 2818858067801804443910144