The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 0 |
| 2 | 1 |
| 3 | 19 |
| 4 | 80 |
| 5 | 230 |
| 6 | 521 |
| 7 | 1019 |
| 8 | 1800 |
| 9 | 2966 |
| 10 | 4593 |
| 11 | 6819 |
| 12 | 9768 |
| 13 | 13566 |
| 14 | 18353 |
| 15 | 24339 |
| 16 | 31640 |
| 17 | 40478 |
| 18 | 51025 |
| 19 | 63523 |
| 20 | 78168 |
| 21 | 95230 |
| 22 | 114881 |
| 23 | 137459 |
| 24 | 163184 |
| 25 | 192374 |
| 26 | 225265 |
| 27 | 262251 |
| 28 | 303568 |
| 29 | 349606 |
| 30 | 400633 |
| 31 | 457099 |
| 32 | 519280 |
| 33 | 587654 |
| 34 | 662481 |
[0,0,1,19,80,230,521,1019,1800,2966,4593,6819, 9768,13566,18353,24339,31640,40478,51025,63523, 78168,95230,114881,137459,163184,192374,225265, 262251,303568,349606,400633,457099,519280,587654, 662481] |