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| n | a(n) |
|---|---|
| 1 | 14 |
| 2 | 69 |
| 3 | 358 |
| 4 | 1844 |
| 5 | 9522 |
| 6 | 49108 |
| 7 | 253476 |
| 8 | 1307604 |
| 9 | 6748036 |
| 10 | 34815556 |
| 11 | 179654284 |
| 12 | 926952404 |
| 13 | 4783063596 |
| 14 | 24679485652 |
| 15 | 127343933580 |
| 16 | 657071270292 |
| 17 | 3390407179468 |
| 18 | 17493950046676 |
| 19 | 90266392976908 |
| 20 | 465760736729108 |
[14,69,358,1844,9522,49108,253476,1307604,6748036, 34815556,179654284,926952404,4783063596, 24679485652,127343933580,657071270292, 3390407179468,17493950046676,90266392976908, 465760736729108] |