808717138331
domain: N
Appears in sequences
- a(n) = 4*a(n-1) - a(n-2), with a(0) = 1, a(1) = 1.at n=22A001835
- a(n) = 4*a(n-1) - a(n-2) with a(1) = 1, a(2) = 3.at n=21A079935
- Prime denominators of the rational convergents to sqrt(3).at n=8A096147
- a(n) gives y-values solving the Diophantine equation 2*x^2 + (x-1)^2 = y^2 for positive x.at n=10A189356