# A026707 (b-file synthesized from sequence entry) 1 1 2 5 3 24 4 116 5 564 6 2752 7 13457 8 65891 9 322905 10 1583317 11 7766507 12 38106295 13 187002147 14 917808733 15 4505028968 16 22114223996 17 108559218028 18 532938398090 19 2616366650454 20 12844836179996 21 63061569809046 22 309603357661692