The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 22 |
| 3 | 100 |
| 4 | 290 |
| 5 | 665 |
| 6 | 1316 |
| 7 | 2352 |
| 8 | 3900 |
| 9 | 6105 |
| 10 | 9130 |
| 11 | 13156 |
| 12 | 18382 |
| 13 | 25025 |
| 14 | 33320 |
| 15 | 43520 |
| 16 | 55896 |
| 17 | 70737 |
| 18 | 88350 |
| 19 | 109060 |
| 20 | 133210 |
| 21 | 161161 |
| 22 | 193292 |
| 23 | 230000 |
| 24 | 271700 |
| 25 | 318825 |
| 26 | 371826 |
| 27 | 431172 |
| 28 | 497350 |
| 29 | 570865 |
| 30 | 652240 |
| 31 | 742016 |
| 32 | 840752 |
| 33 | 949025 |
| 34 | 1067430 |
| 35 | 1196580 |
| 36 | 1337106 |
[0,1,22,100,290,665,1316,2352,3900,6105,9130, 13156,18382,25025,33320,43520,55896,70737,88350, 109060,133210,161161,193292,230000,271700,318825, 371826,431172,497350,570865,652240,742016,840752, 949025,1067430,1196580,1337106] |