65339

Appears in sequences

• Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 49 ones.at n=8A031817
• a(1) = a(2) = a(3) = a(4) = 1; a(n) = (a(n-1)*a(n-3) + a(n-2)^4)/a(n-4).at n=8A072877
• a(n) = 60*n^2 - 1.at n=32A158670
• G.f.: 1 / sqrt( AGM((1 - 3*x)^2, (1 + x)^2) ).at n=14A245931
• Centered cuboctahedral numbers: the number of integer triples (x,y,z) such that max(|x|,|y|,|z|) <= n and |x|+|y|+|z| <= 2n.at n=21A371532