# A148135 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 4 4 11 5 28 6 83 7 254 8 827 9 2724 10 9487 11 33462 12 121479 13 449168 14 1692977 15 6472741 16 25141274 17 98782902 18 392894212 19 1578743442 20 6404897025 21 26212710057 22 108149946290 23 449505848867 24 1881316282718 25 7923914364778 26 33574277467890 27 143047863493073 28 612639929663892 29 2636588347205559