| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | 14 |
| 3 | 38 |
| 4 | 93 |
| 5 | 202 |
| 6 | 400 |
| 7 | 736 |
| 8 | 1260 |
| 9 | 2046 |
| 10 | 3158 |
| 11 | 4676 |
| 12 | 6672 |
| 13 | 9231 |
| 14 | 12441 |
| 15 | 16353 |
| 16 | 21130 |
| 17 | 26779 |
| 18 | 33463 |
| 19 | 41379 |
| 20 | 50568 |
| 21 | 61238 |
| 22 | 73726 |
| 23 | 88348 |
| 24 | 104915 |
| 25 | 124266 |
| 26 | 146833 |
| 27 | 172020 |
| 28 | 200771 |
| 29 | 233777 |
| 30 | 270598 |
| 31 | 310894 |
| 32 | 356778 |
| 33 | 407734 |
| 34 | 462317 |
| 35 | 523410 |
| 36 | 591008 |
[1,4,14,38,93,202,400,736,1260,2046,3158,4676, 6672,9231,12441,16353,21130,26779,33463,41379, 50568,61238,73726,88348,104915,124266,146833, 172020,200771,233777,270598,310894,356778,407734, 462317,523410,591008] |