# A223171 (b-file synthesized from sequence entry) 0 1 1 1 2 5 3 6 4 5 5 6 6 60 7 25 8 66 9 110 10 25 11 66 12 990 13 825 14 125 15 1056 16 2640 17 1200 18 125 19 1056 20 21120 21 26400 22 8000 23 625 24 22176 25 73920 26 50400 27 10500 28 625 29 22176 30 554400 31 924000 32 420000 33 65625 34 3125 35 576576 36 2402400 37 2184000 38 682500 39 81250 40 3125 41 576576 42 17297280