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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 29 |
| 5 | 79 |
| 6 | 341 |
| 7 | 1067 |
| 8 | 4745 |
| 9 | 15959 |
| 10 | 72573 |
| 11 | 256539 |
| 12 | 1183001 |
| 13 | 4339855 |
| 14 | 20218213 |
| 15 | 76289395 |
| 16 | 358226465 |
| 17 | 1382092567 |
| 18 | 6530138429 |
| 19 | 25653670427 |
| 20 | 121817296793 |
| 21 | 485782664255 |
| 22 | 2316312416629 |
| 23 | 9354426554179 |
| 24 | 44758972207377 |
| 25 | 182723834863591 |
| 26 | 876884290189229 |
| 27 | 3613464410162539 |
| 28 | 17385130330867977 |
[1,1,3,7,29,79,341,1067,4745,15959,72573,256539, 1183001,4339855,20218213,76289395,358226465, 1382092567,6530138429,25653670427,121817296793, 485782664255,2316312416629,9354426554179, 44758972207377,182723834863591,876884290189229, 3613464410162539,17385130330867977] |