75330

Appears in sequences

• Numbers k such that (k, sigma(k)) lies on a circle with integral radius centered at the origin, i.e., k^2 + sigma(k)^2 is a square.at n=35A066764
• Number of (n+1)X(1+1) 0..2 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock equal.at n=5A236812
• Number of (n+1)X(6+1) 0..2 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock equal.at n=0A236817
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock equal.at n=15A236819
• T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with the maximum plus the lower median minus the minimum of every 2X2 subblock equal.at n=20A236819