The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 11 |
| 3 | 69 |
| 4 | 231 |
| 5 | 584 |
| 6 | 1230 |
| 7 | 2307 |
| 8 | 3964 |
| 9 | 6385 |
| 10 | 9771 |
| 11 | 14356 |
| 12 | 20377 |
| 13 | 28125 |
| 14 | 37894 |
| 15 | 50008 |
| 16 | 64809 |
| 17 | 82681 |
| 18 | 104005 |
| 19 | 129216 |
| 20 | 158743 |
| 21 | 193063 |
| 22 | 232668 |
| 23 | 278080 |
| 24 | 329812 |
| 25 | 388452 |
| 26 | 454585 |
| 27 | 528822 |
| 28 | 611791 |
| 29 | 704167 |
| 30 | 806610 |
| 31 | 919852 |
| 32 | 1044607 |
| 33 | 1181643 |
[0,0,11,69,231,584,1230,2307,3964,6385,9771,14356, 20377,28125,37894,50008,64809,82681,104005,129216, 158743,193063,232668,278080,329812,388452,454585, 528822,611791,704167,806610,919852,1044607, 1181643] |