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| n | a(n) |
|---|---|
| 1 | 1976 |
| 2 | 12296 |
| 3 | 75108 |
| 4 | 489984 |
| 5 | 3323532 |
| 6 | 23019504 |
| 7 | 162377816 |
| 8 | 1156073240 |
| 9 | 8289295516 |
| 10 | 59533017872 |
| 11 | 428906318808 |
| 12 | 3088913281608 |
| 13 | 22288072580932 |
| 14 | 160654914298920 |
| 15 | 1159724849930116 |
| 16 | 8361789529936496 |
| 17 | 60368998110838220 |
[1976,12296,75108,489984,3323532,23019504, 162377816,1156073240,8289295516,59533017872, 428906318808,3088913281608,22288072580932, 160654914298920,1159724849930116,8361789529936496, 60368998110838220] |