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

A287281

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

Terms

    a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =52a(6) =203a(7) =877a(8) =4140a(9) =21147a(10) =115975a(11) =657423a(12) =3827518a(13) =22762925a(14) =137649001a(15) =843059144a(16) =5212898020a(17) =32457312604a(18) =203096802134

External references