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

A276725

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

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =52a(6) =203a(7) =877a(8) =4140a(9) =21147a(10) =94828a(11) =389946a(12) =1527058a(13) =5846917a(14) =22257299a(15) =85116719a(16) =329147169a(17) =1292371138a(18) =5165744159a(19) =20781403539a(20) =83617668276a(21) =335483033770

External references