# A026332 (b-file synthesized from sequence entry) 0 1 1 2 2 10 3 50 4 266 5 1452 6 8073 7 45460 8 258434 9 1479986 10 8525205 11 49342636 12 286721450 13 1671668520 14 9774222930 15 57291319170 16 336537958394 17 1980643375180 18 11676498649312 19 68940592625476 20 407593403738856 21 2412749904577020