# A092741 (b-file synthesized from sequence entry) 1 1 2 0 3 2 4 0 5 2 6 4 7 0 8 8 9 9 10 7 11 0 12 40 13 45 14 24 15 11 16 0 17 240 18 270 19 144 20 50 21 16 22 0 23 1680 24 1890 25 1008 26 350 27 90 28 22 29 0 30 13440 31 15120 32 8064 33 2800 34 720 35 147 36 29 37 0 38 120960 39 136080 40 72576 41 25200 42 6480 43 1323 44 224 45 37 46 0 47 1209600 48 1360800 49 725760 50 252000 51 64800 52 13230