a(n) is the integer w such that (L(2*n)^2, -L(2*n-1)^2, -w) is a primitive solution to the Diophantine equation 2*x^3 + 2*y^3 + z^3 = 125, where L(n) is the n-th Lucas number (A000032).
A354336
a(n) is the integer w such that (L(2*n)^2, -L(2*n-1)^2, -w) is a primitive solution to the Diophantine equation 2*x^3 + 2*y^3 + z^3 = 125, where L(n) is the n-th Lucas number (A000032).
Terms
- a(0) =1a(1) =11a(2) =61a(3) =401a(4) =2731a(5) =18701a(6) =128161a(7) =878411a(8) =6020701a(9) =41266481a(10) =282844651a(11) =1938646061a(12) =13287677761a(13) =91075098251a(14) =624238009981
External references
- oeis: A354336