a(1)=3; for n>1, a(n) is least number such that a(n) > a(n-1) and a(1)^2+...+a(n)^2 is a square.
A127689
a(1)=3; for n>1, a(n) is least number such that a(n) > a(n-1) and a(1)^2+...+a(n)^2 is a square.
Terms
- a(0) =3a(1) =4a(2) =12a(3) =84a(4) =132a(5) =12324a(6) =15960a(7) =26280a(8) =27300a(9) =66660a(10) =115188a(11) =9777193284a(12) =23465263884a(13) =48701491080
External references
- oeis: A127689