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| n | a(n) |
|---|---|
| 1 | 1517 |
| 2 | 6469 |
| 3 | 26724 |
| 4 | 127113 |
| 5 | 607539 |
| 6 | 3160902 |
| 7 | 16715765 |
| 8 | 93822025 |
| 9 | 532796164 |
| 10 | 3156424373 |
| 11 | 18762427625 |
| 12 | 114987855754 |
| 13 | 702710730811 |
| 14 | 4394295093193 |
| 15 | 27310198108886 |
| 16 | 172840791889181 |
| 17 | 1085768427192305 |
| 18 | 6923023164053098 |
[1517,6469,26724,127113,607539,3160902,16715765, 93822025,532796164,3156424373,18762427625, 114987855754,702710730811,4394295093193, 27310198108886,172840791889181,1085768427192305, 6923023164053098] |