67115

Appears in sequences

• Minimal positive solution a(n) of Diophantine equation a(n)^2 - a(n)*b(n) - G(n)*b(n)^2 = +1 or -1 with G(n) := A078358(n). The companion sequence is b(n)=A077058(n).at n=37A077057
• C(2*n+4,4)-C(2*n,4).at n=23A085474
• Partial sums of A101351.at n=15A101352
• Sum of the squares of the first n nonsquarefree numbers (A013929).at n=30A111732
• 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, 0, 1), (0, 0, 1), (0, 1, -1), (1, -1, 0)}.at n=12A148097
• Expansion of F(x) where F(x) = 1 + x / (1 - x * F(x) - x^2 * F(x^2) ).at n=13A238428