# A150640 (b-file synthesized from sequence entry) 0 1 1 2 2 7 3 27 4 116 5 518 6 2389 7 11220 8 53442 9 257054 10 1245629 11 6069967 12 29708772 13 145907273 14 718561088 15 3546635941 16 17537173481 17 86846891342 18 430617149461 19 2137387582659 20 10618408969182 21 52791279200787 22 262629912189815 23 1307273086691972 24 6510224684733486 25 32434397962284315 26 161648950425814412