100695

Appears in sequences

• Number of (n+1) X 3 0..1 matrices with each 2 X 2 subblock idempotent.at n=18A224544
• Integers k such that there exists an integer 0<m<k such that sigma(m)^2 + sigma(k)^2 = 2*(m+k)^2.at n=26A385008