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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 33 |
| 3 | 249 |
| 4 | 2033 |
| 5 | 17485 |
| 6 | 156033 |
| 7 | 1431281 |
| 8 | 13412193 |
| 9 | 127840085 |
| 10 | 1235575201 |
| 11 | 12080678505 |
| 12 | 119276490193 |
| 13 | 1187542872989 |
| 14 | 11909326179841 |
| 15 | 120191310803937 |
| 16 | 1219780566014657 |
| 17 | 12440630635406245 |
| 18 | 127446349676475425 |
| 19 | 1310820823328281561 |
| 20 | 13530833791486094769 |
[1,5,33,249,2033,17485,156033,1431281,13412193, 127840085,1235575201,12080678505,119276490193, 1187542872989,11909326179841,120191310803937, 1219780566014657,12440630635406245, 127446349676475425,1310820823328281561, 13530833791486094769] |