# A109915 (b-file synthesized from sequence entry) 1 1 2 1 3 4 4 1 5 6 6 1 7 720 8 90 9 10 10 1 11 12 12 1 13 3360 14 240 15 16 16 1 17 18 18 1 19 9240 20 462 21 22 22 1 23 11793600 24 491400 25 19656 26 756 27 28 28 1 29 30 30 1 31 45239040 32 1413720 33 42840 34 1260 35 36 36 1 37 59280 38 1560 39 40 40 1 41 42 42 1 43 91080 44 2070 45 46 46 1 47 311875200 48 6497400 49 132600 50 2652