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

A276723

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

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =52a(6) =203a(7) =877a(8) =3263a(9) =11155a(10) =36810a(11) =120635a(12) =398736a(13) =1340561a(14) =4605989a(15) =15908448a(16) =54826671a(17) =188085307a(18) =642431001a(19) =2188102307a(20) =7446095610a(21) =25366540627a(22) =86531467800a(23) =295449388797

External references