# A058334 (b-file synthesized from sequence entry) 1 0 2 1 3 2 4 3 5 7 6 18 7 22 8 27 9 31 10 78 11 94 12 115 13 171 14 402 15 438 16 507 17 1363 18 1467 19 2263 20 2283 21 3627 22 9247 23 9955