# A149522 (b-file synthesized from sequence entry) 0 1 1 1 2 5 3 11 4 51 5 147 6 691 7 2229 8 10705 9 36887 10 179395 11 646933 12 3162665 13 11791917 14 57803825 15 220956323 16 1085915767 17 4231652157 18 20847441081 19 82512710229 20 407267112001 21 1632910675799 22 8070868209251 23 32713963638185 24 161875171268833 25 662247964007759 26 3280193017213163 27 13527503148957365