The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 2 |
| 4 | 5 |
| 5 | 3 |
| 6 | 10 |
| 7 | 41 |
| 8 | 85 |
| 9 | 178 |
| 10 | 123 |
| 11 | 769 |
| 12 | 10 |
| 13 | 3329 |
| 14 | 533 |
| 15 | 1602 |
| 16 | 30005 |
| 17 | 62441 |
| 18 | 64970 |
| 19 | 270409 |
| 20 | 187575 |
| 21 | 1171042 |
| 22 | 2436961 |
| 23 | 5071361 |
| 24 | 16490 |
| 25 | 1045821 |
| 26 | 45703841 |
| 27 | 95110562 |
| 28 | 15225145 |
| 29 | 411889609 |
| 30 | 47619450 |
| 31 | 1783745641 |
| 32 | 3712008565 |
| 33 | 7724760338 |
[1,1,2,5,3,10,41,85,178,123,769,10,3329,533,1602, 30005,62441,64970,270409,187575,1171042,2436961, 5071361,16490,1045821,45703841,95110562,15225145, 411889609,47619450,1783745641,3712008565, 7724760338] |