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| n | a(n) |
|---|---|
| 1 | 1616 |
| 2 | 8506 |
| 3 | 45987 |
| 4 | 221292 |
| 5 | 1178874 |
| 6 | 6003004 |
| 7 | 32549159 |
| 8 | 160724066 |
| 9 | 869348096 |
| 10 | 4373843360 |
| 11 | 23640263807 |
| 12 | 117797064128 |
| 13 | 637539333018 |
| 14 | 3191979293424 |
| 15 | 17251453853100 |
| 16 | 86211615627356 |
| 17 | 466299429089196 |
| 18 | 2332236204292172 |
[1616,8506,45987,221292,1178874,6003004,32549159, 160724066,869348096,4373843360,23640263807, 117797064128,637539333018,3191979293424, 17251453853100,86211615627356,466299429089196, 2332236204292172] |