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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 34 |
| 2 | 610 |
| 3 | 10946 |
| 4 | 196418 |
| 5 | 3524578 |
| 6 | 63245986 |
| 7 | 1134903170 |
| 8 | 20365011074 |
| 9 | 365435296162 |
| 10 | 6557470319842 |
| 11 | 117669030460994 |
| 12 | 2111485077978050 |
| 13 | 37889062373143906 |
| 14 | 679891637638612258 |
| 15 | 12200160415121876738 |
[2,34,610,10946,196418,3524578,63245986, 1134903170,20365011074,365435296162,6557470319842, 117669030460994,2111485077978050, 37889062373143906,679891637638612258, 12200160415121876738] |