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| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 604 |
| 3 | 3124 |
| 4 | 20044 |
| 5 | 140401 |
| 6 | 997212 |
| 7 | 6974944 |
| 8 | 49037025 |
| 9 | 345316723 |
| 10 | 2430376758 |
| 11 | 17109778022 |
| 12 | 120507273053 |
| 13 | 848674058873 |
| 14 | 5976488058850 |
| 15 | 42090770441039 |
| 16 | 296436570688028 |
| 17 | 2087716660985711 |
| 18 | 14703351353537119 |
| 19 | 103553004320953917 |
[5,604,3124,20044,140401,997212,6974944,49037025, 345316723,2430376758,17109778022,120507273053, 848674058873,5976488058850,42090770441039, 296436570688028,2087716660985711, 14703351353537119,103553004320953917] |