# A037541 (b-file synthesized from sequence entry) 1 1 2 10 3 81 4 649 5 5194 6 41553 7 332425 8 2659402 9 21275217 10 170201737 11 1361613898 12 10892911185 13 87143289481 14 697146315850 15 5577170526801 16 44617364214409 17 356938913715274 18 2855511309722193