The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 18 |
| 3 | 35 |
| 4 | 72 |
| 5 | 100 |
| 6 | 176 |
| 7 | 221 |
| 8 | 333 |
| 9 | 405 |
| 10 | 558 |
| 11 | 679 |
| 12 | 883 |
| 13 | 1028 |
| 14 | 1329 |
| 15 | 1525 |
| 16 | 1869 |
| 17 | 2146 |
| 18 | 2550 |
| 19 | 2910 |
| 20 | 3407 |
| 21 | 3779 |
| 22 | 4411 |
| 23 | 4900 |
| 24 | 5640 |
| 25 | 6176 |
| 26 | 7025 |
| 27 | 7706 |
| 28 | 8714 |
| 29 | 9386 |
| 30 | 10527 |
| 31 | 11420 |
| 32 | 12668 |
| 33 | 13608 |
| 34 | 15081 |
| 35 | 16182 |
| 36 | 17774 |
| 37 | 18954 |
| 38 | 20695 |
| 39 | 22100 |
| 40 | 24024 |
| 41 | 25492 |
| 42 | 27613 |
| 43 | 29250 |
[1,6,18,35,72,100,176,221,333,405,558,679,883, 1028,1329,1525,1869,2146,2550,2910,3407,3779,4411, 4900,5640,6176,7025,7706,8714,9386,10527,11420, 12668,13608,15081,16182,17774,18954,20695,22100, 24024,25492,27613,29250] |