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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 3 |
| 2 | 7 |
| 3 | 15 |
| 4 | 23 |
| 5 | 55 |
| 6 | 95 |
| 7 | 223 |
| 8 | 343 |
| 9 | 887 |
| 10 | 1119 |
| 11 | 3423 |
| 12 | 4439 |
| 13 | 13431 |
| 14 | 17759 |
| 15 | 54623 |
| 16 | 70999 |
| 17 | 214135 |
| 18 | 283999 |
| 19 | 869727 |
| 20 | 1135959 |
| 21 | 3425399 |
| 22 | 4543839 |
| 23 | 13649247 |
| 24 | 18175319 |
| 25 | 54543479 |
| 26 | 72701279 |
| 27 | 218121567 |
| 28 | 289756503 |
| 29 | 879772791 |
| 30 | 1169511775 |
| 31 | 3489678687 |
| 32 | 4668609879 |
| 33 | 14016332919 |
[1,3,7,15,23,55,95,223,343,887,1119,3423,4439, 13431,17759,54623,70999,214135,283999,869727, 1135959,3425399,4543839,13649247,18175319, 54543479,72701279,218121567,289756503,879772791, 1169511775,3489678687,4668609879,14016332919] |