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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 23 |
| 3 | 47 |
| 4 | 233 |
| 5 | 681 |
| 6 | 2596 |
| 7 | 11623 |
| 8 | 39801 |
| 9 | 149442 |
| 10 | 616286 |
| 11 | 2335635 |
| 12 | 8904387 |
| 13 | 34861648 |
| 14 | 135228611 |
| 15 | 521631430 |
| 16 | 2019356359 |
| 17 | 7839971399 |
| 18 | 30360460809 |
| 19 | 117476386060 |
| 20 | 455396350820 |
| 21 | 1764702754346 |
| 22 | 6833651832659 |
| 23 | 26474646322752 |
| 24 | 102580295118751 |
[3,23,47,233,681,2596,11623,39801,149442,616286, 2335635,8904387,34861648,135228611,521631430, 2019356359,7839971399,30360460809,117476386060, 455396350820,1764702754346,6833651832659, 26474646322752,102580295118751] |