# A199221 (b-file synthesized from sequence entry) 1 -1 2 0 3 1 4 1 5 4 6 2 7 2 8 12 9 18 10 6 11 3 12 28 13 83 14 88 15 24 16 4 17 55 18 270 19 575 20 500 21 120 22 5 23 96 24 705 25 2490 26 4324 27 3288 28 720 29 6 30 154 31 1582 32 8330 33 23828 34 35868 35 24696 36 5040 37 7 38 232 39 3178 40 23296 41 98707 42 242872 43 328236 44 209088 45 40320 46 8 47 333 48 5868 49 57078 50 334740 51 1212057 52 2658472 53 3298932 54 1972512 55 362880 56 9 57 460 58 10140 59 126300 60 977865 61 4873680 62 15637290 63 31292600 64 36207576 65 20531520 66 3628800