Number of set partitions of [n] having exactly six pairs (m,m+1) such that m is in some block b and m+1 is in block b+1.
A271793
Number of set partitions of [n] having exactly six pairs (m,m+1) such that m is in some block b and m+1 is in block b+1.
Terms
- a(0) =0a(1) =1a(2) =28a(3) =416a(4) =4658a(5) =45095a(6) =404275a(7) =3485508a(8) =29543547a(9) =249503219a(10) =2117198929a(11) =18150345636a(12) =157763663783
External references
- oeis: A271793