# A117270 (b-file synthesized from sequence entry) 0 0 1 1 2 0 3 2 4 2 5 0 6 12 7 6 8 3 9 0 10 134 11 48 12 12 13 4 14 0 15 2100 16 670 17 120 18 20 19 5 20 0 21 42302 22 12600 23 2010 24 240 25 30 26 6 27 0 28 1041852 29 296114 30 44100 31 4690 32 420 33 42 34 7 35 0 36 30331814 37 8334816 38 1184456 39 117600 40 9380 41 672 42 56 43 8 44 0 45 1019056260 46 272986326 47 37506672 48 3553368