Number of set partitions of [n] such that for each block b the smallest integer interval containing b has at most six elements.

A276722

Number of set partitions of [n] such that for each block b the smallest integer interval containing b has at most six elements.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =52a(6) =203a(7) =674a(8) =2066a(9) =6184a(10) =18587a(11) =56867a(12) =178317a(13) =561319a(14) =1760125a(15) =5489888a(16) =17057701a(17) =52931331a(18) =164466672a(19) =511758485a(20) =1593612234a(21) =4962950389a(22) =15451453190a(23) =48088784307a(24) =149640967002a(25) =465653853729

External references