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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 8 |
| 3 | 64 |
| 4 | 540 |
| 5 | 4096 |
| 6 | 33280 |
| 7 | 262144 |
| 8 | 2101304 |
| 9 | 16779232 |
| 10 | 134250496 |
| 11 | 1073741824 |
| 12 | 8590231296 |
| 13 | 68719476736 |
| 14 | 549757911040 |
| 15 | 4398046773248 |
| 16 | 35184389011270 |
| 17 | 281474976710656 |
| 18 | 2251799950016256 |
| 19 | 18014398509481984 |
| 20 | 144115189151809536 |
| 21 | 1152921504623624192 |
| 22 | 9223372045444710400 |
| 23 | 73786976294838206464 |
[1,8,64,540,4096,33280,262144,2101304,16779232, 134250496,1073741824,8590231296,68719476736, 549757911040,4398046773248,35184389011270, 281474976710656,2251799950016256, 18014398509481984,144115189151809536, 1152921504623624192,9223372045444710400, 73786976294838206464] |