# A089402 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 3 4 8 5 22 6 68 7 217 8 720 9 2438 10 8412 11 29414 12 104048 13 371516 14 1337352 15 4847637 16 17679264 17 64823110 18 238820780 19 883634026 20 3282065072 21 12233141908 22 45741298616 23 171529836218 24 644952132448 25 2430973304732 26 9183676744088