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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 3 |
| 3 | 11 |
| 4 | 5 |
| 5 | 37 |
| 6 | 7 |
| 7 | 268435463 |
| 8 | 6569 |
| 9 | 521 |
| 10 | 11 |
| 11 | 36028797018963979 |
| 12 | 13 |
| 13 | 859935929762876868984659981 |
| 14 | 4807339234680508004200143948920808143 |
| 15 | 32783 |
| 16 | 17 |
| 17 | 30491346729331195921 |
| 18 | 19 |
| 19 | 32064977213018365645815827 |
| 20 | 147808829414345923316083210206383297621 |
[2,3,11,5,37,7,268435463,6569,521,11, 36028797018963979,13,859935929762876868984659981, 4807339234680508004200143948920808143,32783,17, 30491346729331195921,19, 32064977213018365645815827, 147808829414345923316083210206383297621] |