Number of set partitions of [n] such that for each block all absolute differences between consecutive elements are <= six.
A287278
Number of set partitions of [n] such that for each block all absolute differences between consecutive elements are <= six.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =52a(6) =203a(7) =877a(8) =3937a(9) =18162a(10) =85347a(11) =405803a(12) =1942918a(13) =9339084a(14) =45003444a(15) =217201380a(16) =1049271992a(17) =5071767524a(18) =24523356660a(19) =118602078194a(20) =573667951966
External references
- oeis: A287278