The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 14 |
| 3 | 18 |
| 4 | 25 |
| 5 | 113 |
| 6 | 238 |
| 7 | 359 |
| 8 | 1309 |
| 9 | 3091 |
| 10 | 5173 |
| 11 | 15475 |
| 12 | 39432 |
| 13 | 72084 |
| 14 | 189527 |
| 15 | 495712 |
| 16 | 981404 |
| 17 | 2379279 |
| 18 | 6211445 |
| 19 | 13097776 |
| 20 | 30387724 |
| 21 | 77976438 |
| 22 | 172291180 |
| 23 | 391956305 |
| 24 | 983542082 |
| 25 | 2243798047 |
| 26 | 5079682165 |
| 27 | 12475410712 |
| 28 | 29036847557 |
| 29 | 65931275352 |
[1,14,18,25,113,238,359,1309,3091,5173,15475, 39432,72084,189527,495712,981404,2379279,6211445, 13097776,30387724,77976438,172291180,391956305, 983542082,2243798047,5079682165,12475410712, 29036847557,65931275352] |