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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 16 |
| 3 | 92 |
| 4 | 742 |
| 5 | 13260 |
| 6 | 220882 |
| 7 | 4094666 |
| 8 | 129528304 |
| 9 | 4643477356 |
| 10 | 183171965504 |
| 11 | 10948746139548 |
| 12 | 797831881523648 |
| 13 | 65446536338563458 |
| 14 | 7746605907720894574 |
| 15 | 1149785247198798823392 |
| 16 | 195841032765969991278104 |
[2,16,92,742,13260,220882,4094666,129528304, 4643477356,183171965504,10948746139548, 797831881523648,65446536338563458, 7746605907720894574,1149785247198798823392, 195841032765969991278104] |