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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 4 |
| 3 | 11 |
| 4 | 23 |
| 5 | 86 |
| 6 | 148 |
| 7 | 191 |
| 8 | 232 |
| 9 | 271 |
| 10 | 656 |
| 11 | 844 |
| 12 | 1069 |
| 13 | 1318 |
| 14 | 1348 |
| 15 | 1411 |
| 16 | 2329 |
| 17 | 4120 |
| 18 | 4831 |
| 19 | 12691 |
| 20 | 14695 |
| 21 | 17719 |
| 22 | 39614 |
| 23 | 139417 |
[2,4,11,23,86,148,191,232,271,656,844,1069,1318, 1348,1411,2329,4120,4831,12691,14695,17719,39614, 139417] |