# A255009 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 1 4 1 5 2 6 1 7 1 8 4 9 6 10 1 11 1 12 4 13 36 14 12 15 1 16 1 17 8 18 108 19 144 20 60 21 1 22 1 23 4 24 216 25 864 26 3600 27 20 28 1 29 1 30 8 31 324 32 3456 33 108000 34 3600 35 140 36 1 37 1 38 8 39 1944 40 10368 41 2160000 42 12000 43 176400 44 280 45 1 46 1 47 16 48 1944 49 124416 50 32400000 51 2160000 52 4116000