# A173278 (b-file synthesized from sequence entry) 0 1 1 2 2 3 3 4 4 6 5 9 6 14 7 23 8 39 9 67 10 118 11 211 12 381 13 696 14 1281 15 2372 16 4420 17 8275 18 15555 19 29352 20 55566 21 105495 22 200820 23 383181 24 732701 25 1403789 26 2694344 27 5179848 28 9973338 29 19229733 30 37125412 31 71762245 32 138871109 33 269021602 34 521666737