# A061018 (b-file synthesized from sequence entry) 1 1 2 1 3 1 4 2 5 3 6 4 7 6 8 10 9 13 10 15 11 24 12 42 13 56 14 67 15 76 16 120 17 216 18 294 19 358 20 411 21 455 22 720 23 1320 24 1824 25 2250 26 2612 27 2921 28 3186 29 5040 30 9360 31 13080 32 16296 33 19086 34 21514 35 23633 36 25487 37 40320 38 75600 39 106560 40 133800 41 157824 42 179058 43 197864 44 214551 45 229384