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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 3 |
| 4 | 167 |
| 5 | 11 |
| 6 | 489 |
| 7 | 43 |
| 8 | 282407 |
| 9 | 171 |
| 10 | 110865 |
| 11 | 683 |
| 12 | 3710553451913 |
| 13 | 2731 |
| 14 | 27323481 |
| 15 | 10923 |
| 16 | 1293248801687 |
| 17 | 43691 |
| 18 | 6910715937 |
| 19 | 174763 |
| 20 | 2983746256027727 |
| 21 | 699051 |
| 22 | 1762357129833 |
| 23 | 2796203 |
| 24 | 734630194457006903941170593 |
| 25 | 11184811 |
| 26 | 450614156030769 |
| 27 | 44739243 |
[1,3,3,167,11,489,43,282407,171,110865,683, 3710553451913,2731,27323481,10923,1293248801687, 43691,6910715937,174763,2983746256027727,699051, 1762357129833,2796203,734630194457006903941170593, 11184811,450614156030769,44739243] |