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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 9 |
| 4 | 19 |
| 5 | 36 |
| 6 | 66 |
| 7 | 127 |
| 8 | 256 |
| 9 | 513 |
| 10 | 998 |
| 11 | 1916 |
| 12 | 3717 |
| 13 | 7311 |
| 14 | 14396 |
| 15 | 28134 |
| 16 | 54719 |
| 17 | 106624 |
| 18 | 208577 |
| 19 | 408426 |
| 20 | 798340 |
| 21 | 1558049 |
| 22 | 3041323 |
| 23 | 5942916 |
| 24 | 11618026 |
| 25 | 22703871 |
| 26 | 44346624 |
| 27 | 86617729 |
| 28 | 169226638 |
| 29 | 330675804 |
| 30 | 646109597 |
| 31 | 1262265767 |
| 32 | 2465931324 |
| 33 | 4817687118 |
[1,2,4,9,19,36,66,127,256,513,998,1916,3717,7311, 14396,28134,54719,106624,208577,408426,798340, 1558049,3041323,5942916,11618026,22703871, 44346624,86617729,169226638,330675804,646109597, 1262265767,2465931324,4817687118] |