Number of set partitions of [n] into exactly six parts such that no part contains two elements with a circular distance less than three.

A261482

Number of set partitions of [n] into exactly six parts such that no part contains two elements with a circular distance less than three.

Terms

    a(0) =1a(1) =7a(2) =42a(3) =210a(4) =985a(5) =4400a(6) =18944a(7) =80067a(8) =333431a(9) =1372364a(10) =5607350a(11) =22788432a(12) =92221903a(13) =372094575a(14) =1498066156a(15) =6021295070a(16) =24172138331a(17) =96949953648a(18) =388584438750

External references