Number of set partitions of [n] such that for each block all absolute differences between consecutive elements are <= seven.

A287279

Number of set partitions of [n] such that for each block all absolute differences between consecutive elements are <= seven.

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =52a(6) =203a(7) =877a(8) =4140a(9) =20270a(10) =102004a(11) =523700a(12) =2726840a(13) =14332663a(14) =75789343a(15) =402290332a(16) =2140945657a(17) =11413941169a(18) =60921661218a(19) =325417158033

External references