Number of set partitions of [n] having exactly seven pairs (m,m+1) such that m+1 is in some block b and m is in block b+1.
A270961
Number of set partitions of [n] having exactly seven pairs (m,m+1) such that m+1 is in some block b and m is in block b+1.
Terms
- a(0) =36a(1) =1260a(2) =23258a(3) =324891a(4) =3968251a(5) =45402693a(6) =504270360a(7) =5543886289a(8) =61008463952a(9) =676542685621
External references
- oeis: A270961