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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 22 |
| 3 | 96 |
| 4 | 453 |
| 5 | 2302 |
| 6 | 12052 |
| 7 | 65326 |
| 8 | 358429 |
| 9 | 1989453 |
| 10 | 11087559 |
| 11 | 62022945 |
| 12 | 347395505 |
| 13 | 1948118084 |
| 14 | 10928901807 |
| 15 | 61334491446 |
| 16 | 344258620897 |
| 17 | 1932496326979 |
| 18 | 10848464120753 |
| 19 | 60902512055626 |
| 20 | 341906150989889 |
| 21 | 1919482880527468 |
[7,22,96,453,2302,12052,65326,358429,1989453, 11087559,62022945,347395505,1948118084, 10928901807,61334491446,344258620897, 1932496326979,10848464120753,60902512055626, 341906150989889,1919482880527468] |