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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 98 |
| 2 | 960 |
| 3 | 3828 |
| 4 | 10228 |
| 5 | 21772 |
| 6 | 40248 |
| 7 | 67390 |
| 8 | 105222 |
| 9 | 156300 |
| 10 | 221246 |
| 11 | 304392 |
| 12 | 404404 |
| 13 | 528100 |
| 14 | 672456 |
| 15 | 844334 |
| 16 | 1044690 |
| 17 | 1270896 |
| 18 | 1531834 |
| 19 | 1833912 |
| 20 | 2163068 |
| 21 | 2537074 |
| 22 | 2949726 |
| 23 | 3412394 |
| 24 | 3922832 |
| 25 | 4470566 |
| 26 | 5074544 |
| 27 | 5742778 |
| 28 | 6460670 |
[2,98,960,3828,10228,21772,40248,67390,105222, 156300,221246,304392,404404,528100,672456,844334, 1044690,1270896,1531834,1833912,2163068,2537074, 2949726,3412394,3922832,4470566,5074544,5742778, 6460670] |