# A071223 (b-file synthesized from sequence entry) 2 2 3 2 4 6 5 2 6 12 7 24 8 2 9 20 10 72 11 120 12 2 13 30 14 172 15 480 16 720 17 2 18 42 19 352 20 1512 21 3600 22 5040 23 2 24 56 25 646 26 3976 27 14184 28 30240 29 40320 30 2 31 72 32 1094 33 9144 34 45992 35 143712 36 282240 37 362880 38 2 39 90 40 1742 41 18990 42 128288 43 557640 44 1575648 45 2903040 46 3628800 47 2 48 110 49 2642 50 36410 51 318188 52 1840520 53 7152048 54 18659520 55 32659200 56 39916800