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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 31 |
| 3 | 151 |
| 4 | 1753 |
| 5 | 1747 |
| 6 | 1741 |
| 7 | 19471 |
| 8 | 118801 |
| 9 | 148537 |
| 10 | 148531 |
| 11 | 406951 |
| 12 | 2339089 |
| 13 | 2339041 |
| 14 | 51662599 |
| 15 | 51662593 |
| 16 | 73451737 |
| 17 | 232301497 |
| 18 | 450988159 |
| 19 | 1444257721 |
| 20 | 1444257709 |
| 21 | 1444257673 |
| 22 | 24061965049 |
| 23 | 24061965043 |
| 24 | 43553959723 |
| 25 | 43553959717 |
| 26 | 502429570231 |
| 27 | 1552841185993 |
[7,31,151,1753,1747,1741,19471,118801,148537, 148531,406951,2339089,2339041,51662599,51662593, 73451737,232301497,450988159,1444257721, 1444257709,1444257673,24061965049,24061965043, 43553959723,43553959717,502429570231, 1552841185993] |