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| n | a(n) |
|---|---|
| 0 | 31 |
| 1 | 94 |
| 2 | 783 |
| 3 | 877 |
| 4 | 1660 |
| 5 | 2537 |
| 6 | 4197 |
| 7 | 6734 |
| 8 | 10931 |
| 9 | 28596 |
| 10 | 39527 |
| 11 | 68123 |
| 12 | 1061372 |
| 13 | 12804587 |
| 14 | 26670546 |
| 15 | 172827863 |
| 16 | 372326272 |
| 17 | 4640743127 |
| 18 | 69983473177 |
| 19 | 74624216304 |
| 20 | 144607689481 |
| 21 | 363839595266 |
| 22 | 508447284747 |
[31,94,783,877,1660,2537,4197,6734,10931,28596, 39527,68123,1061372,12804587,26670546,172827863, 372326272,4640743127,69983473177,74624216304, 144607689481,363839595266,508447284747] |