# A219731 (b-file synthesized from sequence entry) 2 1 3 4 4 9 5 3 6 16 7 28 8 25 9 135 10 15 11 36 12 462 13 220 14 49 15 1274 16 1638 17 91 18 64 19 3024 20 8400 21 1820 22 81 23 6426 24 33660 25 18360 26 612 27 100 28 12540 29 112860 30 125970 31 15504 32 121 33 22869 34 330330 35 665665 36 197505 37 4389 38 144 39 39468 40 868296 41 2900898 42 1700160 43 134596 44 169 45 65065 46 2091375 47 10883600 48 11182600 49 2072070 50 32890