76993

Appears in sequences

• Nonnegative values x of solutions (x, y) to the Diophantine equation x^2+(x+647)^2 = y^2.at n=9A130013
• a(n) = 10*a(n-1) - 17*a(n-2) for n > 1; a(0) = 1, a(1) = 17.at n=5A164543
• a(n) = n^4 - 4*(n^3-n)/3.at n=17A389090