148972186537
domain: N
Appears in sequences
- Consider Pythagorean triples which satisfy X^2+(X+7)^2=Z^2; sequence gives increasing values of Z.at n=27A060569
- a(0)=-4, a(1)=5; thereafter a(n) = 2*a(n-1) + a(n-2).at n=29A221174
- Part of the positive proper solutions y of the Pell equation x^2 - 2*y^2 = - 7^2 based on the fundamental solution (x0, y0)= (1, 5).at n=14A254759