# A133644 (b-file synthesized from sequence entry) 1 1 2 1 3 2 4 1 5 2 6 6 7 1 8 4 9 9 10 24 11 1 12 4 13 13 14 44 15 120 16 1 17 8 18 36 19 82 20 265 21 720 22 1 23 8 24 54 25 148 26 580 27 1854 28 5040 29 1 30 16 31 81 32 576 33 1313 34 4752 35 14833 36 40320 37 1 38 16 39 216 40 1056 41 2916 42 12108 43 43424 44 133496 45 362880 46 1 47 32 48 324 49 1968 50 14400 51 32826 52 127044 53 440192 54 1334961 55 3628800 56 1 57 32 58 486 59 3608 60 31800 61 86400 62 373208 63 1448640 64 4893072 65 14684570 66 39916800