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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 98 |
| 3 | 1250 |
| 4 | 19208 |
| 5 | 293378 |
| 6 | 4458098 |
| 7 | 67837952 |
| 8 | 1032124178 |
| 9 | 15703109762 |
| 10 | 238914663752 |
| 11 | 3634957526642 |
| 12 | 55303917942338 |
| 13 | 841419307238528 |
| 14 | 12801741179208962 |
| 15 | 194771591274765458 |
| 16 | 2963344770015913928 |
[2,98,1250,19208,293378,4458098,67837952, 1032124178,15703109762,238914663752,3634957526642, 55303917942338,841419307238528,12801741179208962, 194771591274765458,2963344770015913928] |