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A261974 as a simple table
| n | a(n) |
|---|---|
| 1 | 67 |
| 2 | 3307 |
| 3 | 152275 |
| 4 | 7001563 |
| 5 | 321919843 |
| 6 | 14801311435 |
| 7 | 680538406387 |
| 8 | 31289965382587 |
| 9 | 1438657869192835 |
| 10 | 66146972017488043 |
| 11 | 3041322054935257363 |
| 12 | 139834667555004350875 |
| 13 | 6429353385475264883107 |
| 14 | 295610421064307180272267 |
| 15 | 13591650015572655027641395 |
[67,3307,152275,7001563,321919843,14801311435, 680538406387,31289965382587,1438657869192835, 66146972017488043,3041322054935257363, 139834667555004350875,6429353385475264883107, 295610421064307180272267, 13591650015572655027641395] |