39012

Appears in sequences

• Coordination sequence for 4-dimensional face-centered cubic orthogonal lattice.at n=18A008529
• Numbers k such that (2^k - 1)^2 - 2 = 4^k - 2^(k+1) - 1 is prime.at n=30A091515
• Number of n X n arrays of squares of integers, symmetric about main diagonal, with all rows summing to 81.at n=4A156525
• Number of pairs (x, y) with 0 <= x, y <= n such that the distance between two points is a positive integer.at n=28A228108