# A138458 (b-file synthesized from sequence entry) 1 2 2 27 3 625 4 4802 5 73205 6 199927 7 1002252 8 1954815 9 6156502 10 24754835 11 36940840 12 106827177 13 197803270 14 263247677 15 448930652 16 923186277 17 1757017345 18 2146105355 19 3768259627 20 5336453010 21 6304409502 22 10127021060 23 13620538127