Number of set partitions of [n] having exactly six pairs (m,m+1) such that m+1 is in some block b and m is in block b+1.
A270960
Number of set partitions of [n] having exactly six pairs (m,m+1) such that m+1 is in some block b and m is in block b+1.
Terms
- a(0) =1a(1) =76a(2) =1650a(3) =23031a(4) =264716a(5) =2788215a(6) =28315287a(7) =284453798a(8) =2865664275a(9) =29172005637a(10) =301410662549
External references
- oeis: A270960