# A148855 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 8 4 28 5 91 6 357 7 1316 8 5290 9 21137 10 87905 11 364034 12 1561508 13 6634870 14 29020984 15 126046450 16 559099248 17 2469187687 18 11084955557 19 49574819823 20 224824650873 21 1015850981738 22 4645039658822 23 21172021133032 24 97474508273022 25 447579684854340 26 2072778400834434 27 9577522969707324 28 44582241806569082