# A148872 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 8 4 29 5 95 6 371 7 1391 8 5579 9 22515 10 93172 11 389984 12 1660907 13 7129259 14 30986277 15 135626950 16 598601472 17 2659537838 18 11888774528 19 53438424419 20 241407630975 21 1095407211522 22 4991553340467 23 22831078844323 24 104797432694290 25 482588831392966 26 2228958459777283 27 10323814710499352 28 47940936376648040