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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 8193 |
| 3 | 1594324 |
| 4 | 67117057 |
| 5 | 1220703126 |
| 6 | 13062296532 |
| 7 | 96889010408 |
| 8 | 549822930945 |
| 9 | 2541867422653 |
| 10 | 10001220711318 |
| 11 | 34522712143932 |
| 12 | 107006334784468 |
| 13 | 302875106592254 |
| 14 | 793811662272744 |
| 15 | 1946196290656824 |
| 16 | 4504149450301441 |
| 17 | 9904578032905938 |
| 18 | 20825519793796029 |
| 19 | 42052983462257060 |
[1,8193,1594324,67117057,1220703126,13062296532, 96889010408,549822930945,2541867422653, 10001220711318,34522712143932,107006334784468, 302875106592254,793811662272744,1946196290656824, 4504149450301441,9904578032905938, 20825519793796029,42052983462257060] |