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| n | a(n) |
|---|---|
| 0 | 26 |
| 1 | 27 |
| 2 | 53 |
| 3 | 186 |
| 4 | 4889 |
| 5 | 14853 |
| 6 | 19742 |
| 7 | 34595 |
| 8 | 1818682 |
| 9 | 1853277 |
| 10 | 3671959 |
| 11 | 12869154 |
| 12 | 338269963 |
| 13 | 1027679043 |
| 14 | 1365949006 |
| 15 | 2393628049 |
| 16 | 125834607554 |
| 17 | 128228235603 |
| 18 | 254062843157 |
| 19 | 890416765074 |
| 20 | 23404898735081 |
[26,27,53,186,4889,14853,19742,34595,1818682, 1853277,3671959,12869154,338269963,1027679043, 1365949006,2393628049,125834607554,128228235603, 254062843157,890416765074,23404898735081] |