# A274495 (b-file synthesized from sequence entry) 2 2 3 3 4 9 5 23 6 62 7 171 8 482 9 1384 10 4036 11 11924 12 35619 13 107407 14 326521 15 999675 16 3079634 17 9539366 18 29693294 19 92831327 20 291366477 21 917765199 22 2900217452 23 9192097510 24 29213057684 25 93073003438 26 297215560553 27 951144390092 28 3049877146281 29 9797605279905