The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 25 |
| 2 | 65 |
| 3 | 169 |
| 4 | 407 |
| 5 | 977 |
| 6 | 2283 |
| 7 | 5313 |
| 8 | 12259 |
| 9 | 28253 |
| 10 | 65023 |
| 11 | 149817 |
| 12 | 345739 |
| 13 | 799821 |
| 14 | 1855467 |
| 15 | 4317293 |
| 16 | 10077003 |
| 17 | 23592677 |
| 18 | 55403427 |
| 19 | 130474345 |
| 20 | 308095007 |
| 21 | 729314485 |
| 22 | 1730363331 |
| 23 | 4113892073 |
| 24 | 9798957667 |
| 25 | 23379161753 |
| 26 | 55863031875 |
[25,65,169,407,977,2283,5313,12259,28253,65023, 149817,345739,799821,1855467,4317293,10077003, 23592677,55403427,130474345,308095007,729314485, 1730363331,4113892073,9798957667,23379161753, 55863031875] |