25173

Appears in sequences

• Numbers k such that 155*2^k+1 is prime.at n=20A032454
• Partial sums of A068058 + 1.at n=47A068059
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 0), (0, 1, -1), (1, 0, 0), (1, 0, 1)}.at n=8A150391
• a(n) = n^3 + (1-n)^2.at n=29A168297
• Number of (w,x,y,z) with all terms in {1,...,n} and w^2<=x^2+y^2+z^2.at n=13A212093
• a(n) = a(n-1) + a(n-3) + a(n-5) - a(n-6), a(0) = a(1) = a(2) = 1, a(3) = 2, a(4) = 3, a(5) = 5.at n=26A278706
• Least number x such that x^n has n digits equal to k. Case k=4.at n=21A285451
• Number of connected induced (non-null) subgraphs of the complete binary tree with n nodes.at n=23A286304
• G.f. A(x) satisfies: x*A(x) = Sum_{n=-oo..+oo} (-1)^n * x^(n*(n+1)/2) * A(x)^n.at n=7A355361
• a(n) = Sum_{1 <= x_1, x_2, x_3 <= n} gcd(x_1, x_2, n)/gcd(x_1, x_2, x_3, n).at n=28A373061