# A150533 (b-file synthesized from sequence entry) 0 1 1 2 2 7 3 25 4 109 5 445 6 2041 7 8903 8 41777 9 188835 10 898187 11 4149843 12 19910578 13 93363307 14 450660409 15 2135553110 16 10354383193 17 49450864210 18 240592458544 19 1155935532779 20 5639339702694 21 27222773812905 22 133104616214822 23 644989013091962 24 3159480561138418 25 15357981391532350 26 75348649206675611