The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 361 |
| 2 | 491 |
| 3 | 1050 |
| 4 | 2141 |
| 5 | 4908 |
| 6 | 11631 |
| 7 | 28009 |
| 8 | 69326 |
| 9 | 174169 |
| 10 | 438621 |
| 11 | 1112366 |
| 12 | 2823355 |
| 13 | 7188661 |
| 14 | 18288126 |
| 15 | 46636012 |
| 16 | 118746423 |
| 17 | 302960773 |
| 18 | 771654913 |
| 19 | 1969083737 |
| 20 | 5015887134 |
| 21 | 12800207475 |
| 22 | 32607429469 |
| 23 | 83213838466 |
| 24 | 211983036189 |
[361,491,1050,2141,4908,11631,28009,69326,174169, 438621,1112366,2823355,7188661,18288126,46636012, 118746423,302960773,771654913,1969083737, 5015887134,12800207475,32607429469,83213838466, 211983036189] |