# A148809 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 8 4 26 5 86 6 300 7 1099 8 4065 9 15464 10 60126 11 235711 12 938916 13 3786566 14 15373560 15 63058702 16 260700178 17 1083632350 18 4536791630 19 19096536008 20 80737061523 21 343192967447 22 1464457668985 23 6271953873038 24 26975682913289 25 116353776657458 26 503418109852904 27 2185615416588541 28 9509539891579458