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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 10 |
| 3 | 34 |
| 4 | 214 |
| 5 | 1016 |
| 6 | 5429 |
| 7 | 27535 |
| 8 | 142858 |
| 9 | 733811 |
| 10 | 3785852 |
| 11 | 19494390 |
| 12 | 100466360 |
| 13 | 517573094 |
| 14 | 2666814576 |
| 15 | 13739888978 |
| 16 | 70792474153 |
| 17 | 364741397621 |
| 18 | 1879254550345 |
| 19 | 9682444806825 |
| 20 | 49886719497414 |
| 21 | 257030490240855 |
| 22 | 1324294082316952 |
[1,10,34,214,1016,5429,27535,142858,733811, 3785852,19494390,100466360,517573094,2666814576, 13739888978,70792474153,364741397621, 1879254550345,9682444806825,49886719497414, 257030490240855,1324294082316952] |