402539

Appears in sequences

• a(n) = 4*a(n-1) - a(n-2) with a(0) = 4 and a(1) = 11.at n=9A077236
• Combined Diophantine Chebyshev sequences A077236 and A077235.at n=18A077238
• Numbers k such that k^2 = 12*n^2 + 13.at n=9A106257