# A019998 (b-file synthesized from sequence entry) 0 2 1 4 2 7 3 14 4 87 5 110 6 178 7 1551 8 2311 9 2820 10 2862 11 5158 12 9267 13 15867 14 25023 15 34363 16 68486 17 2570490 18 4313372 19 21511363 20 22412883 21 54933234 22 66947210 23 341535842 24 995434171 25 1491645143 26 4258696422 27 26212684635 28 28500533228