# A000630 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 3 4 7 5 12 6 23 7 41 8 81 9 149 10 282 11 522 12 987 13 1843 14 3463 15 6473 16 12160 17 22773 18 42719 19 80025 20 150074 21 281258 22 527320 23 988334 24 1852849 25 3473061 26 6510681 27 12204139 28 22877649 29 42884585 30 80389797 31 150692973 32 282481747 33 529522496 34 992614937 35 1860696007