The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 11 |
| 2 | 66 |
| 3 | 165 |
| 4 | 308 |
| 5 | 495 |
| 6 | 726 |
| 7 | 1001 |
| 8 | 1320 |
| 9 | 1683 |
| 10 | 2090 |
| 11 | 2541 |
| 12 | 3036 |
| 13 | 3575 |
| 14 | 4158 |
| 15 | 4785 |
| 16 | 5456 |
| 17 | 6171 |
| 18 | 6930 |
| 19 | 7733 |
| 20 | 8580 |
| 21 | 9471 |
| 22 | 10406 |
| 23 | 11385 |
| 24 | 12408 |
| 25 | 13475 |
| 26 | 14586 |
| 27 | 15741 |
| 28 | 16940 |
| 29 | 18183 |
| 30 | 19470 |
| 31 | 20801 |
| 32 | 22176 |
| 33 | 23595 |
| 34 | 25058 |
| 35 | 26565 |
| 36 | 28116 |
| 37 | 29711 |
[0,11,66,165,308,495,726,1001,1320,1683,2090,2541, 3036,3575,4158,4785,5456,6171,6930,7733,8580,9471, 10406,11385,12408,13475,14586,15741,16940,18183, 19470,20801,22176,23595,25058,26565,28116,29711] |