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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 2 |
| 2 | 1031 |
| 3 | 59051 |
| 4 | 1048583 |
| 5 | 9765629 |
| 6 | 60466181 |
| 7 | 282475267 |
| 8 | 1073741827 |
| 9 | 3486784409 |
| 10 | 10000000019 |
| 11 | 25937424629 |
| 12 | 61917364273 |
| 13 | 137858491853 |
| 14 | 289254655033 |
| 15 | 576650390627 |
| 16 | 1099511627791 |
| 17 | 2015993900533 |
| 18 | 3570467226671 |
| 19 | 6131066257889 |
| 20 | 10240000000081 |
| 21 | 16679880978223 |
| 22 | 26559922791443 |
| 23 | 41426511213667 |
[2,2,1031,59051,1048583,9765629,60466181, 282475267,1073741827,3486784409,10000000019, 25937424629,61917364273,137858491853,289254655033, 576650390627,1099511627791,2015993900533, 3570467226671,6131066257889,10240000000081, 16679880978223,26559922791443,41426511213667] |