23825

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has period 63.at n=28A020402
• a(0)=4; a(n)=n^2+a(n-1) for n>0.at n=41A153058
• a(n) = 66*n^2 - 1.at n=18A158693
• Number of binary strings of length n with no substrings equal to 0001, 0110, or 1110.at n=29A164482
• Triangle of coefficients of polynomials v(n,x) jointly generated with A210221; see the Formula section.at n=50A210599
• Numbers n such that 7^n-6^(n-1) is prime.at n=17A273524
• L.g.f.: log(Sum_{k>=0} k! * x^k / Product_{j=1..k} (1 - j*x)).at n=5A331335
• Number of vertices in a complete bipartite graph where the vertices in the two parts are placed on opposite sides of a parabola at integer x coordinates |x| = 1, 2, ...n.at n=18A392425