# A149193 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 10 4 38 5 127 6 493 7 1841 8 7280 9 28878 10 116567 11 478811 12 1973493 13 8272377 14 34738919 15 147542225 16 629264252 17 2700080188 18 11655144044 19 50463437540 20 219806610774 21 959526286345 22 4208678301965 23 18506049432901 24 81640804619981 25 361209023120827 26 1601666859421432 27 7122833707402200