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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 257 |
| 2 | 1025 |
| 3 | 3329 |
| 4 | 10241 |
| 5 | 30977 |
| 6 | 93185 |
| 7 | 279809 |
| 8 | 839681 |
| 9 | 2519297 |
| 10 | 7558145 |
| 11 | 22674689 |
| 12 | 68024321 |
| 13 | 204073217 |
| 14 | 612219905 |
| 15 | 1836659969 |
| 16 | 5509980161 |
| 17 | 16529940737 |
| 18 | 49589822465 |
| 19 | 148769467649 |
| 20 | 446308403201 |
| 21 | 1338925209857 |
| 22 | 4016775629825 |
| 23 | 12050326889729 |
| 24 | 36150980669441 |
[1,257,1025,3329,10241,30977,93185,279809,839681, 2519297,7558145,22674689,68024321,204073217, 612219905,1836659969,5509980161,16529940737, 49589822465,148769467649,446308403201, 1338925209857,4016775629825,12050326889729, 36150980669441] |