Number of unsigned permutations in S_{3n-1} whose breakpoint graph contains only cycles of length 3.
A178217
Number of unsigned permutations in S_{3n-1} whose breakpoint graph contains only cycles of length 3.
Terms
- a(0) =1a(1) =12a(2) =464a(3) =38720a(4) =5678400a(5) =1294720000a(6) =423809075200
External references
- oeis: A178217