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| n | a(n) |
|---|---|
| 1 | 42 |
| 2 | 1764 |
| 3 | 10710 |
| 4 | 36456 |
| 5 | 92610 |
| 6 | 196812 |
| 7 | 370734 |
| 8 | 640080 |
| 9 | 1034586 |
| 10 | 1588020 |
| 11 | 2338182 |
| 12 | 3326904 |
| 13 | 4600050 |
| 14 | 6207516 |
| 15 | 8203230 |
| 16 | 10645152 |
| 17 | 13595274 |
| 18 | 17119620 |
| 19 | 21288246 |
| 20 | 26175240 |
| 21 | 31858722 |
| 22 | 38420844 |
| 23 | 45947790 |
| 24 | 54529776 |
| 25 | 64261050 |
| 26 | 75239892 |
| 27 | 87568614 |
[42,1764,10710,36456,92610,196812,370734,640080, 1034586,1588020,2338182,3326904,4600050,6207516, 8203230,10645152,13595274,17119620,21288246, 26175240,31858722,38420844,45947790,54529776, 64261050,75239892,87568614] |