# A220222 (b-file synthesized from sequence entry) 0 1 1 0 2 1 3 2 4 0 5 2 6 3 7 12 8 0 9 6 10 28 11 24 12 72 13 0 14 24 15 125 16 400 17 180 18 480 19 0 20 120 21 1146 22 2220 23 4680 24 1440 25 3600 26 0 27 720 28 8827 29 29064 30 30870 31 53760 32 12600 33 30240 34 0 35 5040 36 94200 37 272272 38 545328 39 409920 40 638400 41 120960 42 282240 43 0 44 40320 45 1007001 46 3722688 47 5989032 48 9386496 49 5518800 50 7983360 51 1270080 52 2903040 53 0 54 362880