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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 196 |
| 3 | 9025 |
| 4 | 427716 |
| 5 | 20277009 |
| 6 | 961434049 |
| 7 | 45583531009 |
| 8 | 2161117565476 |
| 9 | 102456463038084 |
| 10 | 4857310924636921 |
| 11 | 230276948274214416 |
| 12 | 10917021188851445889 |
| 13 | 517556134069075087921 |
| 14 | 24536386370101531606209 |
[4,196,9025,427716,20277009,961434049,45583531009, 2161117565476,102456463038084,4857310924636921, 230276948274214416,10917021188851445889, 517556134069075087921,24536386370101531606209] |