# A137767 (b-file synthesized from sequence entry) 1 2 2 3 3 7 4 12 5 4 6 9 7 20 8 5 9 49 10 60 11 11 12 30 13 6 14 71 15 105 16 13 17 42 18 7 19 351 20 280 21 97 22 168 23 15 24 56 25 8 26 545 27 504 28 127 29 252 30 17 31 72 32 9 33 2561 34 1260 35 799 36 840 37 161 38 360 39 19 40 90 41 10 42 4159 43 2310 44 1121 45 1320 46 199 47 495 48 21 49 110 50 11