# A125094 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 5 4 13 5 36 6 104 7 313 8 977 9 3152 10 10486 11 35880 12 126039 13 453725 14 1671322 15 6291148 16 24170312 17 94680426 18 377788108 19 1534169595 20 6335718925 21 26589240583 22 113323479393 23 490203781505 24 2150975413846 25 9569147610181 26 43140286838567