# A151311 (b-file synthesized from sequence entry) 0 1 1 2 2 10 3 39 4 198 5 925 6 4776 7 24060 8 126487 9 661878 10 3535036 11 18912243 12 102315291 13 555380560 14 3035526926 15 16648736296 16 91744178637 17 507145996099 18 2813240191532 19 15647805585405 20 87275231793209 21 487899119884300 22 2733627777842600 23 15346333573735620 24 86314136061361379 25 486289956048585875