113042841domain: NAppears in sequencesNumber of set partitions of [n] having exactly ten pairs (m,m+1) such that m+1 is in some block b and m is in block b+1.at n=5A270964Number of set partitions of [2n] having exactly n pairs (m,m+1) such that m+1 is in some block b and m is in block b+1.at n=10A270965