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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1048576 |
| 2 | 282475249 |
| 3 | 10000000000 |
| 4 | 137858491849 |
| 5 | 1099511627776 |
| 6 | 6131066257801 |
| 7 | 26559922791424 |
| 8 | 95367431640625 |
| 9 | 296196766695424 |
| 10 | 819628286980801 |
| 11 | 2064377754059776 |
| 12 | 4808584372417849 |
| 13 | 10485760000000000 |
| 14 | 21611482313284249 |
| 15 | 42420747482776576 |
| 16 | 79792266297612001 |
[1,1048576,282475249,10000000000,137858491849, 1099511627776,6131066257801,26559922791424, 95367431640625,296196766695424,819628286980801, 2064377754059776,4808584372417849, 10485760000000000,21611482313284249, 42420747482776576,79792266297612001] |