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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 20 |
| 3 | 92 |
| 4 | 16 |
| 5 | 1056 |
| 6 | 212419 |
| 7 | 128 |
| 8 | 13379 |
| 9 | 40695508 |
| 10 | 1024 |
| 11 | 4196352 |
| 12 | 13892162580 |
| 13 | 8192 |
| 14 | 268451840 |
| 15 | 1002493281672 |
| 16 | 65536 |
| 17 | 17180000256 |
| 18 | 4998382669357032 |
| 19 | 524288 |
| 20 | 1099512676352 |
| 21 | 3418993385062038719 |
| 22 | 4194304 |
| 23 | 70368752566272 |
[2,20,92,16,1056,212419,128,13379,40695508,1024, 4196352,13892162580,8192,268451840,1002493281672, 65536,17180000256,4998382669357032,524288, 1099512676352,3418993385062038719,4194304, 70368752566272] |