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A305573 as a simple table
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 5 |
| 2 | 27 |
| 3 | 152 |
| 4 | 879 |
| 5 | 5181 |
| 6 | 30980 |
| 7 | 187352 |
| 8 | 1143447 |
| 9 | 7031999 |
| 10 | 43524851 |
| 11 | 270892380 |
| 12 | 1694120644 |
| 13 | 10639643324 |
| 14 | 67071402168 |
| 15 | 424231073712 |
| 16 | 2691390885735 |
| 17 | 17121286350819 |
| 18 | 109187993381489 |
| 19 | 697911059909408 |
[1,5,27,152,879,5181,30980,187352,1143447,7031999, 43524851,270892380,1694120644,10639643324, 67071402168,424231073712,2691390885735, 17121286350819,109187993381489,697911059909408] |