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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 6 |
| 3 | 29 |
| 4 | 291 |
| 5 | 3127 |
| 6 | 48246 |
| 7 | 823545 |
| 8 | 16909060 |
| 9 | 387459858 |
| 10 | 10019533302 |
| 11 | 285311670613 |
| 12 | 8920489178073 |
| 13 | 302875106592255 |
| 14 | 11113363271736486 |
| 15 | 437893951444713443 |
| 16 | 18447307036548136965 |
| 17 | 827240261886336764179 |
| 18 | 39346708467688595378892 |
| 19 | 1978419655660313589123981 |
[1,6,29,291,3127,48246,823545,16909060,387459858, 10019533302,285311670613,8920489178073, 302875106592255,11113363271736486, 437893951444713443,18447307036548136965, 827240261886336764179,39346708467688595378892, 1978419655660313589123981] |