Number of set partitions of [2n] into exactly n parts such that no part contains two elements with a circular distance less than three.
A261479
Number of set partitions of [2n] into exactly n parts such that no part contains two elements with a circular distance less than three.
Terms
- a(0) =1a(1) =0a(2) =0a(3) =1a(4) =7a(5) =458a(6) =18944a(7) =858023a(8) =42615547a(9) =2331292564a(10) =140077132527
External references
- oeis: A261479