# A151017 (b-file synthesized from sequence entry) 0 1 1 2 2 9 3 39 4 186 5 882 6 4307 7 21010 8 103692 9 511773 10 2539439 11 12603464 12 62722473 13 312217229 14 1556418854 15 7760380972 16 38725714681 17 193279301481 18 965122674081 19 4819846440327 20 24077535920525 21 120290453853929 22 601077094933615 23 3003718138328801 24 15012022337535169 25 75031110935319189 26 375039355141811408