25604

Appears in sequences

• a(n) = n^3 + (n+1)^3 + (n+2)^3 + (n+3)^3.at n=17A027603
• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 80.at n=3A031758
• a(1)=1; a(n) = Sum_{1<=k<n, gcd(k,n(n+1)/2)=1} a(k).at n=26A125597
• Floor of entry (2,1) of [0,1; 1,phi]^n.at n=14A139333
• a(n) = 16*n^2 + 4.at n=39A158444