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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 29 |
| 3 | 189 |
| 4 | 1373 |
| 5 | 11037 |
| 6 | 97565 |
| 7 | 942109 |
| 8 | 9869853 |
| 9 | 111475229 |
| 10 | 1349927453 |
| 11 | 17444868637 |
| 12 | 239615283741 |
| 13 | 3486244426269 |
| 14 | 53566700311069 |
| 15 | 866907958202909 |
| 16 | 14742110756459037 |
| 17 | 262857666867286557 |
| 18 | 4904594355185832477 |
[1,5,29,189,1373,11037,97565,942109,9869853, 111475229,1349927453,17444868637,239615283741, 3486244426269,53566700311069,866907958202909, 14742110756459037,262857666867286557, 4904594355185832477] |