The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 28 |
| 1 | 169 |
| 2 | 704 |
| 3 | 4393 |
| 4 | 246712 |
| 5 | 1484665 |
| 6 | 6185372 |
| 7 | 38596897 |
| 8 | 2167611604 |
| 9 | 13044266521 |
| 10 | 54344677688 |
| 11 | 339112332649 |
| 12 | 19044635306032 |
| 13 | 114606924168841 |
| 14 | 477472331981396 |
| 15 | 2979440916057217 |
| 16 | 167326163631185548 |
| 17 | 1006936422703170505 |
[28,169,704,4393,246712,1484665,6185372,38596897, 2167611604,13044266521,54344677688,339112332649, 19044635306032,114606924168841,477472331981396, 2979440916057217,167326163631185548, 1006936422703170505] |