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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 2 |
| 3 | 2 |
| 4 | 4 |
| 5 | 10 |
| 6 | 22 |
| 7 | 44 |
| 8 | 86 |
| 9 | 170 |
| 10 | 340 |
| 11 | 682 |
| 12 | 1366 |
| 13 | 2732 |
| 14 | 5462 |
| 15 | 10922 |
| 16 | 21844 |
| 17 | 43690 |
| 18 | 87382 |
| 19 | 174764 |
| 20 | 349526 |
| 21 | 699050 |
| 22 | 1398100 |
| 23 | 2796202 |
| 24 | 5592406 |
| 25 | 11184812 |
| 26 | 22369622 |
| 27 | 44739242 |
| 28 | 89478484 |
| 29 | 178956970 |
| 30 | 357913942 |
| 31 | 715827884 |
| 32 | 1431655766 |
| 33 | 2863311530 |
[1,2,2,2,4,10,22,44,86,170,340,682,1366,2732,5462, 10922,21844,43690,87382,174764,349526,699050, 1398100,2796202,5592406,11184812,22369622, 44739242,89478484,178956970,357913942,715827884, 1431655766,2863311530] |