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| n | a(n) |
|---|---|
| 1 | 290 |
| 2 | 19016 |
| 3 | 1279862 |
| 4 | 88662978 |
| 5 | 6215002266 |
| 6 | 435599518160 |
| 7 | 30577245619492 |
| 8 | 2145961447892386 |
| 9 | 150629240515340670 |
| 10 | 10572567332219259666 |
| 11 | 742094548656309697042 |
| 12 | 52087780768510204956480 |
| 13 | 3656060603655477820657112 |
[290,19016,1279862,88662978,6215002266, 435599518160,30577245619492,2145961447892386, 150629240515340670,10572567332219259666, 742094548656309697042,52087780768510204956480, 3656060603655477820657112] |