171036

Appears in sequences

• Number of 2's in all partitions of n.at n=43A024786
• Number of occurrences of smallest prime factor in all partitions of n-th composite number: a(n)=A066633(A002808(n), A056608(n)).at n=28A091109
• Number of (n+1)X(1+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal.at n=5A236980
• Number of (n+1)X(6+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal.at n=0A236985
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal.at n=15A236987
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with the maximum plus the upper median plus the lower median of every 2X2 subblock equal.at n=20A236987
• a(n) = (4/n^2)*( Sum_{k=0..n-1} k*A246459(k) ).at n=6A246513