| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 67 |
| 3 | 389 |
| 4 | 32212254749 |
| 5 | 584115552289 |
| 6 | 1861861819085211933448282832989 |
| 7 | 22747455000408352326750293979672813380881340606518608030931171147991 |
[2,67,389,32212254749,584115552289, 1861861819085211933448282832989, 22747455000408352326750293979672813380881340606518\ 608030931171147991] |