# A150785 (b-file synthesized from sequence entry) 0 1 1 2 2 8 3 30 4 135 5 579 6 2723 7 12339 8 59277 9 276665 10 1345269 11 6393287 12 31322030 13 150637188 14 741700919 15 3596682654 16 17770927067 17 86693084805 18 429420886016 19 2104274543789 20 10442645460273 21 51347690040441 22 255178100991149 23 1258116115806969 24 6259192509479481 25 30926062538141649 26 153991023855675944