546792

Appears in sequences

• 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, 1), (-1, 0, 0), (1, -1, -1), (1, 0, 1), (1, 1, 0)}.at n=10A150378
• G.f.: A(x) = 1/(1 - 2*x - 7*x^2 - 2*x^3 + x^4).at n=10A166989
• Absolute discriminants of imaginary quadratic number fields with elementary bicyclic 7-class group (7,7).at n=37A359872