# A198685 (b-file synthesized from sequence entry) 1 3 2 6 3 9 4 16 5 21 6 31 7 44 8 57 9 77 10 94 11 113 12 135 13 155 14 183 15 205 16 237 17 279 18 312 19 347 20 389 21 405 22 463 23 507 24 593 25 607 26 643 27 699