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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 28 |
| 2 | 126 |
| 3 | 344 |
| 4 | 757 |
| 5 | 1332 |
| 6 | 2198 |
| 7 | 3528 |
| 8 | 4914 |
| 9 | 6860 |
| 10 | 9632 |
| 11 | 12168 |
| 12 | 15751 |
| 13 | 20440 |
| 14 | 24390 |
| 15 | 29792 |
| 16 | 37296 |
| 17 | 43344 |
| 18 | 50654 |
| 19 | 61544 |
| 20 | 68922 |
| 21 | 79508 |
| 22 | 95382 |
| 23 | 103824 |
| 24 | 117993 |
| 25 | 137592 |
| 26 | 148878 |
| 27 | 167832 |
| 28 | 192080 |
| 29 | 205380 |
| 30 | 226982 |
| 31 | 260408 |
| 32 | 276948 |
| 33 | 300764 |
| 34 | 340704 |
| 35 | 357912 |
[1,28,126,344,757,1332,2198,3528,4914,6860,9632, 12168,15751,20440,24390,29792,37296,43344,50654, 61544,68922,79508,95382,103824,117993,137592, 148878,167832,192080,205380,226982,260408,276948, 300764,340704,357912] |