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| n | a(n) |
|---|---|
| 1 | 138 |
| 2 | 88636 |
| 3 | 3685550 |
| 4 | 51077518 |
| 5 | 389832124 |
| 6 | 2044221894 |
| 7 | 8281149188 |
| 8 | 27785393300 |
| 9 | 80752300406 |
| 10 | 209581305608 |
| 11 | 496408914210 |
| 12 | 1090354976530 |
| 13 | 2248071267000 |
| 14 | 4391976524034 |
| 15 | 8191437222152 |
| 16 | 14673108432136 |
| 17 | 25367684178562 |
[138,88636,3685550,51077518,389832124,2044221894, 8281149188,27785393300,80752300406,209581305608, 496408914210,1090354976530,2248071267000, 4391976524034,8191437222152,14673108432136, 25367684178562] |