# A003420 (b-file synthesized from sequence entry) 1 1 2 2 3 5 4 11 5 14 6 26 7 41 8 89 9 101 10 194 11 314 12 341 13 689 14 1091 15 1154 16 1889 17 2141 18 3449 19 3506 20 5561 21 6254 22 8126 23 8774 24 10709 25 13166 26 15461 27 23201 28 24569 29 30014 30 81149 31 81626 32 162686 33 243374 34 644474 35 839354 36 879941