The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 6 | 26 |
| 7 | 56 |
| 8 | 132 |
| 9 | 327 |
| 10 | 863 |
| 11 | 2333 |
| 12 | 6620 |
| 13 | 19130 |
| 14 | 57515 |
| 15 | 175771 |
| 16 | 555673 |
| 17 | 1784015 |
| 18 | 5899056 |
| 19 | 19795308 |
| 20 | 68163789 |
| 21 | 238040835 |
| 22 | 850372635 |
| 23 | 3079156803 |
| 24 | 11376375381 |
| 25 | 42585665859 |
| 26 | 162324759308 |
| 27 | 626699226366 |
| 28 | 2459686799702 |
| 29 | 9775044096970 |
| 30 | 39436677372291 |
| 31 | 161037770577853 |
[26,56,132,327,863,2333,6620,19130,57515,175771, 555673,1784015,5899056,19795308,68163789, 238040835,850372635,3079156803,11376375381, 42585665859,162324759308,626699226366, 2459686799702,9775044096970,39436677372291, 161037770577853] |