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| n | a(n) |
|---|---|
| 1 | 6640 |
| 2 | 122260 |
| 3 | 122260 |
| 4 | 4995424 |
| 5 | 33108928 |
| 6 | 4995424 |
| 7 | 102708184 |
| 8 | 1971669364 |
| 9 | 1971669364 |
| 10 | 102708184 |
| 11 | 3094685248 |
| 12 | 518886911776 |
| 13 | 2405641138384 |
| 14 | 518886911776 |
| 15 | 3094685248 |
| 16 | 66258357796 |
| 17 | 28826088968548 |
| 18 | 924622251445704 |
| 19 | 924622251445704 |
[6640,122260,122260,4995424,33108928,4995424, 102708184,1971669364,1971669364,102708184, 3094685248,518886911776,2405641138384, 518886911776,3094685248,66258357796, 28826088968548,924622251445704,924622251445704] |