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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 71 |
| 3 | 181 |
| 4 | 503 |
| 5 | 2531 |
| 6 | 5273 |
| 7 | 9887 |
| 8 | 11587 |
| 9 | 55339 |
| 10 | 174917 |
| 11 | 225961 |
| 12 | 534883 |
| 13 | 2492311 |
| 14 | 5409337 |
| 15 | 130449773 |
| 16 | 141833603 |
| 17 | 212583797 |
| 18 | 658046911 |
| 19 | 1183597123 |
| 20 | 2897211971 |
| 21 | 5602581277 |
| 22 | 46992178547 |
| 23 | 70637059291 |
| 24 | 158465541049 |
| 25 | 182591976709 |
| 26 | 339683208863 |
[2,71,181,503,2531,5273,9887,11587,55339,174917, 225961,534883,2492311,5409337,130449773,141833603, 212583797,658046911,1183597123,2897211971, 5602581277,46992178547,70637059291,158465541049, 182591976709,339683208863] |