# A149298 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 11 4 46 5 163 6 711 7 2795 8 12428 9 51753 10 235649 11 1018677 12 4692842 13 20793843 14 96868626 15 437325625 16 2053558366 17 9396741255 18 44410201233 19 205466708855 20 976289490566 21 4555528967641 22 21739565731106 23 102161620436227 24 489367738092226 25 2313227779931447 26 11115478974146769 27 52801134542954409