# A374428 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 2 4 5 5 13 6 6 7 14 8 33 9 79 10 24 11 54 12 122 13 277 14 633 15 120 16 264 17 582 18 1286 19 2849 20 6331 21 720 22 1560 23 3384 24 7350 25 15986 26 34821 27 75973 28 5040 29 10800 30 23160 31 49704 32 106758 33 229502 34 493825 35 1063623 36 40320 37 85680 38 182160 39 387480 40 824664 41 1756086 42 3741674 43 7977173 44 17017969