A simple grammar: union of cycles and cycles of cycles.
A052828
A simple grammar: union of cycles and cycles of cycles.
Terms
- a(0) =0a(1) =2a(2) =3a(3) =9a(4) =41a(5) =252a(6) =1954a(7) =18302a(8) =200906a(9) =2528152a(10) =35862456a(11) =565985472a(12) =9834073248a(13) =186504365616
External references
- oeis: A052828