Number of set partitions of [n] such that all absolute differences between least elements of consecutive blocks and between consecutive elements within the blocks are not larger than eight.
A287587
Number of set partitions of [n] such that all absolute differences between least elements of consecutive blocks and between consecutive elements within the blocks are not larger than eight.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =52a(6) =203a(7) =877a(8) =4140a(9) =21147a(10) =111834a(11) =607467a(12) =3364240a(13) =18882202a(14) =106908086a(15) =608561226a(16) =3475148745a(17) =19883233772a(18) =113936008776a(19) =653440621531
External references
- oeis: A287587