# A150553 (b-file synthesized from sequence entry) 0 1 1 2 2 7 3 26 4 105 5 443 6 1931 7 8619 8 39138 9 180100 10 837279 11 3924640 12 18519066 13 87870877 14 418876055 15 2004669434 16 9626561780 17 46363330956 18 223866924604 19 1083384848069 20 5253395542429 21 25519189279554 22 124160104067499 23 604945683243907 24 2951277482140430 25 14414887009758621 26 70481444130319621