a(n) is the integer w such that (c(n)^2, -d(n)^2, w) is a primitive solution to the Diophantine equation 2*x^3 + 2*y^3 + z^3 = 11^3, where c(n) = F(n+2) + (-1)^n * F(n-3), d(n) = F(n+3) + (-1)^n * F(n-2) and F(n) is the n-th Fibonacci number (A000045).
A356717
a(n) is the integer w such that (c(n)^2, -d(n)^2, w) is a primitive solution to the Diophantine equation 2*x^3 + 2*y^3 + z^3 = 11^3, where c(n) = F(n+2) + (-1)^n * F(n-3), d(n) = F(n+3) + (-1)^n * F(n-2) and F(n) is the n-th Fibonacci number (A000045).
Terms
- a(0) =1a(1) =29a(2) =59a(3) =241a(4) =445a(5) =1691a(6) =3089a(7) =11629a(8) =21211a(9) =79745a(10) =145421a(11) =546619a(12) =996769a(13) =3746621a(14) =6831995a(15) =25679761a(16) =46827229a(17) =176011739a(18) =320958641a(19) =1206402445a(20) =2199883291a(21) =8268805409a(22) =15078224429a(23) =56675235451a(24) =103347687745a(25) =388457842781a(26) =708355589819
External references
- oeis: A356717