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| n | a(n) |
|---|---|
| 1 | 27 |
| 2 | 129 |
| 3 | 2097 |
| 4 | 62694 |
| 5 | 568053 |
| 6 | 9465579 |
| 7 | 153369936 |
| 8 | 2690956971 |
| 9 | 45874334853 |
| 10 | 796531210974 |
| 11 | 13594653632997 |
| 12 | 236054009534571 |
| 13 | 4119252539173344 |
| 14 | 72199869938810379 |
| 15 | 1270404732873196197 |
| 16 | 22433067829384669998 |
[27,129,2097,62694,568053,9465579,153369936, 2690956971,45874334853,796531210974, 13594653632997,236054009534571,4119252539173344, 72199869938810379,1270404732873196197, 22433067829384669998] |