52976

Appears in sequences

• Base 7 digits are, in order, the first n terms of the periodic sequence with initial period 3,1,0.at n=5A037663
• a(n) = 2*n*(n+1)*(n+2)/3.at n=42A210440
• Numbers k such that the determinant of the Vandermonde matrix of their digits is equal to phi(k), the Euler totient function of k.at n=16A307587
• Area/6 of primitive Pythagorean triangles generated by {{2, 0}, {1, -1}}^n * {{2}, {1}}, for n >= 0.at n=4A334908
• Partial sums of the even triangular numbers (A014494).at n=42A352115
• G.f. A(x) satisfies A(x) = 1 + x^2*(1+x)^2*A(x)^3.at n=13A366590