# A181411 (b-file synthesized from sequence entry) 1 4 2 18 3 55 4 150 5 379 6 915 7 2146 8 4934 9 11080 10 24833 11 54476 12 119091 13 259432 14 556700 15 1195135 16 2561094 17 5428597 18 11488866 19 24350993 20 51296325 21 107427025 22 225330244 23 472762497 24 985966379 25 2049357779 26 4267962522 27 8887535983 28 18431783744