The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 2 |
| 3 | 45 |
| 4 | 53 |
| 5 | 177 |
| 6 | 436 |
| 7 | 1239 |
| 8 | 3651 |
| 9 | 6463 |
| 10 | 6869 |
| 11 | 10753 |
| 12 | 19450 |
| 13 | 29721 |
| 14 | 33289 |
| 15 | 88907 |
| 16 | 93682 |
| 17 | 1137232 |
| 18 | 1516121 |
| 19 | 4361271 |
| 20 | 9428534 |
| 21 | 43778664 |
| 22 | 74738670 |
| 23 | 271442366 |
| 24 | 775223371 |
| 25 | 835126289 |
| 26 | 1736463189 |
| 27 | 3088442241 |
| 28 | 5054888590 |
| 29 | 11184483614 |
| 30 | 16993011938 |
| 31 | 30788570768 |
| 32 | 33342871740 |
[1,2,45,53,177,436,1239,3651,6463,6869,10753, 19450,29721,33289,88907,93682,1137232,1516121, 4361271,9428534,43778664,74738670,271442366, 775223371,835126289,1736463189,3088442241, 5054888590,11184483614,16993011938,30788570768, 33342871740] |