# A001217 (b-file synthesized from sequence entry) 1 1 2 2 3 4 4 6 5 8 6 12 7 24 8 48 9 120 10 192 11 384 12 720 13 1152 14 1920 15 3840 16 5040 17 23040 18 40320 19 46080 20 51840 21 322560 22 362880 23 645120 24 2903040 25 3628800 26 5160960 27 10321920 28 39916800 29 92897280 30 185794560 31 479001600 32 696729600 33 1857945600 34 3715891200