| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 6 |
| 3 | 10 |
| 4 | 14 |
| 5 | 26 |
| 6 | 34 |
| 7 | 38 |
| 8 | 62 |
| 9 | 122 |
| 10 | 178 |
| 11 | 214 |
| 12 | 254 |
| 13 | 1042 |
| 14 | 1214 |
| 15 | 2558 |
| 16 | 4406 |
| 17 | 4562 |
| 18 | 6434 |
| 19 | 8506 |
| 20 | 8846 |
| 21 | 19378 |
| 22 | 19882 |
| 23 | 22426 |
| 24 | 39874 |
| 25 | 43402 |
| 26 | 46418 |
| 27 | 88994 |
| 28 | 172486 |
| 29 | 221006 |
| 30 | 264098 |
| 31 | 432182 |
| 32 | 1513678 |
| 33 | 1718866 |
| 34 | 2515574 |
| 35 | 2796538 |
| 36 | 5952442 |
| 37 | 6042754 |
| 38 | 13945186 |
| 39 | 26933834 |
[4,6,10,14,26,34,38,62,122,178,214,254,1042,1214, 2558,4406,4562,6434,8506,8846,19378,19882,22426, 39874,43402,46418,88994,172486,221006,264098, 432182,1513678,1718866,2515574,2796538,5952442, 6042754,13945186,26933834] |