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| n | a(n) |
|---|---|
| 1 | 4 |
| 2 | 7 |
| 3 | 19 |
| 4 | 41 |
| 5 | 127252 |
| 6 | 199 |
| 7 | 26890624 |
| 8 | 919 |
| 9 | 17299 |
| 10 | 6641 |
| 11 | 25269208984376 |
| 12 | 3401 |
| 13 | 3900566650390624 |
| 14 | 640063 |
| 15 | 8418574 |
| 16 | 18089 |
| 17 | 1164385682220458984374 |
| 18 | 41651 |
| 19 | 69528379848480224609374 |
| 20 | 128465 |
| 21 | 34084859374 |
| 22 | 12164095 |
| 23 | 150509919493198394775390626 |
| 24 | 90271 |
[4,7,19,41,127252,199,26890624,919,17299,6641, 25269208984376,3401,3900566650390624,640063, 8418574,18089,1164385682220458984374,41651, 69528379848480224609374,128465,34084859374, 12164095,150509919493198394775390626,90271] |