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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 7 |
| 3 | 14 |
| 4 | 28 |
| 5 | 57 |
| 6 | 115 |
| 7 | 230 |
| 8 | 460 |
| 9 | 921 |
| 10 | 1842 |
| 11 | 3685 |
| 12 | 7371 |
| 13 | 14743 |
| 14 | 29486 |
| 15 | 58973 |
| 16 | 117947 |
| 17 | 235894 |
| 18 | 471789 |
| 19 | 943579 |
| 20 | 1887159 |
| 21 | 3774318 |
| 22 | 7548637 |
| 23 | 15097274 |
| 24 | 30194548 |
| 25 | 60389097 |
| 26 | 120778195 |
| 27 | 241556391 |
| 28 | 483112783 |
| 29 | 966225567 |
| 30 | 1932451134 |
| 31 | 3864902268 |
| 32 | 7729804536 |
[1,3,7,14,28,57,115,230,460,921,1842,3685,7371, 14743,29486,58973,117947,235894,471789,943579, 1887159,3774318,7548637,15097274,30194548, 60389097,120778195,241556391,483112783,966225567, 1932451134,3864902268,7729804536] |