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| n | a(n) |
|---|---|
| 0 | 4 |
| 1 | 1 |
| 2 | 9 |
| 3 | 11 |
| 4 | 29 |
| 5 | 51 |
| 6 | 109 |
| 7 | 211 |
| 8 | 429 |
| 9 | 851 |
| 10 | 1709 |
| 11 | 3411 |
| 12 | 6829 |
| 13 | 13651 |
| 14 | 27309 |
| 15 | 54611 |
| 16 | 109229 |
| 17 | 218451 |
| 18 | 436909 |
| 19 | 873811 |
| 20 | 1747629 |
| 21 | 3495251 |
| 22 | 6990509 |
| 23 | 13981011 |
| 24 | 27962029 |
| 25 | 55924051 |
| 26 | 111848109 |
| 27 | 223696211 |
| 28 | 447392429 |
| 29 | 894784851 |
| 30 | 1789569709 |
| 31 | 3579139411 |
| 32 | 7158278829 |
| 33 | 14316557651 |
| 34 | 28633115309 |
| 35 | 57266230611 |
| 36 | 114532461229 |
| 37 | 229064922451 |
[4,1,9,11,29,51,109,211,429,851,1709,3411,6829, 13651,27309,54611,109229,218451,436909,873811, 1747629,3495251,6990509,13981011,27962029, 55924051,111848109,223696211,447392429,894784851, 1789569709,3579139411,7158278829,14316557651, 28633115309,57266230611,114532461229,229064922451] |