The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 13 |
| 3 | 29 |
| 4 | 61 |
| 5 | 509 |
| 6 | 1021 |
| 7 | 4093 |
| 8 | 16381 |
| 9 | 1048573 |
| 10 | 4194301 |
| 11 | 16777213 |
| 12 | 536870909 |
| 13 | 19807040628566084398385987581 |
| 14 | 83076749736557242056487941267521533 |
| 15 | 5316911983139663491615228241121378301 |
| 16 | 1427247692705959881058285969449495136382746621 |
[5,13,29,61,509,1021,4093,16381,1048573,4194301, 16777213,536870909,19807040628566084398385987581, 83076749736557242056487941267521533, 5316911983139663491615228241121378301, 1427247692705959881058285969449495136382746621] |