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| n | a(n) |
|---|---|
| 0 | 26 |
| 1 | 27 |
| 2 | 53 |
| 3 | 80 |
| 4 | 133 |
| 5 | 612 |
| 6 | 2581 |
| 7 | 10936 |
| 8 | 13517 |
| 9 | 24453 |
| 10 | 37970 |
| 11 | 62423 |
| 12 | 3283966 |
| 13 | 3346389 |
| 14 | 6630355 |
| 15 | 9976744 |
| 16 | 16607099 |
| 17 | 76405140 |
| 18 | 322227659 |
| 19 | 1365315776 |
| 20 | 1687543435 |
| 21 | 3052859211 |
| 22 | 4740402646 |
| 23 | 7793261857 |
| 24 | 409990019210 |
| 25 | 417783281067 |
| 26 | 827773300277 |
| 27 | 1245556581344 |
[26,27,53,80,133,612,2581,10936,13517,24453,37970, 62423,3283966,3346389,6630355,9976744,16607099, 76405140,322227659,1365315776,1687543435, 3052859211,4740402646,7793261857,409990019210, 417783281067,827773300277,1245556581344] |