61505

Appears in sequences

• a(n) = 81*n^2 - 72*n + 17.at n=28A154277
• a(n) = 64*n^2 + 1.at n=31A158686
• Numbers k such that distances from k to three nearest squares are three triangular numbers.at n=27A232501
• Number of (1+2)X(n+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 4 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 4 6 or 7.at n=10A252434