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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 54 |
| 3 | 500 |
| 4 | 2058 |
| 5 | 13310 |
| 6 | 26364 |
| 7 | 78608 |
| 8 | 123462 |
| 9 | 267674 |
| 10 | 682892 |
| 11 | 893730 |
| 12 | 1823508 |
| 13 | 2756840 |
| 14 | 3339294 |
| 15 | 4775858 |
| 16 | 7741604 |
| 17 | 11911982 |
| 18 | 13618860 |
| 19 | 19850358 |
| 20 | 25053770 |
| 21 | 28009224 |
| 22 | 38457042 |
| 23 | 46886534 |
| 24 | 62037272 |
| 25 | 87616608 |
| 26 | 103030100 |
| 27 | 111458154 |
[8,54,500,2058,13310,26364,78608,123462,267674, 682892,893730,1823508,2756840,3339294,4775858, 7741604,11911982,13618860,19850358,25053770, 28009224,38457042,46886534,62037272,87616608, 103030100,111458154] |