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| n | a(n) |
|---|---|
| 1 | 40 |
| 2 | 685 |
| 3 | 4364 |
| 4 | 20625 |
| 5 | 210362 |
| 6 | 1724088 |
| 7 | 15282749 |
| 8 | 158811752 |
| 9 | 1460794339 |
| 10 | 14117917139 |
| 11 | 144615148548 |
| 12 | 1399153374630 |
| 13 | 13824276707100 |
| 14 | 139927570808579 |
| 15 | 1381401531147870 |
| 16 | 13761702636318942 |
| 17 | 138349438016533866 |
[40,685,4364,20625,210362,1724088,15282749, 158811752,1460794339,14117917139,144615148548, 1399153374630,13824276707100,139927570808579, 1381401531147870,13761702636318942, 138349438016533866] |