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| n | a(n) |
|---|---|
| 0 | 26 |
| 1 | 27 |
| 2 | 53 |
| 3 | 80 |
| 4 | 4213 |
| 5 | 4293 |
| 6 | 8506 |
| 7 | 12799 |
| 8 | 674054 |
| 9 | 686853 |
| 10 | 1360907 |
| 11 | 2047760 |
| 12 | 107844427 |
| 13 | 109892187 |
| 14 | 217736614 |
| 15 | 327628801 |
| 16 | 17254434266 |
| 17 | 17582063067 |
| 18 | 34836497333 |
| 19 | 52418560400 |
| 20 | 2760601638133 |
| 21 | 2813020198533 |
[26,27,53,80,4213,4293,8506,12799,674054,686853, 1360907,2047760,107844427,109892187,217736614, 327628801,17254434266,17582063067,34836497333, 52418560400,2760601638133,2813020198533] |