a(1) = 1, a(2) = 2; for n > 2, a(n) = smallest positive number which has not appeared that has a common factor with a(n-2)^2 + a(n-1)^2.
A358444
a(1) = 1, a(2) = 2; for n > 2, a(n) = smallest positive number which has not appeared that has a common factor with a(n-2)^2 + a(n-1)^2.
Terms
- a(0) =1a(1) =2a(2) =5a(3) =29a(4) =4a(5) =857a(6) =10a(7) =734549a(8) =539562233501a(9) =6a(10) =12433a(11) =15a(12) =8a(13) =17a(14) =353a(15) =12a(16) =124753a(17) =13a(18) =14a(19) =20a(20) =16a(21) =18a(22) =22a(23) =24a(24) =25a(25) =1201a(26) =26a(27) =41a(28) =2357a(29) =28
External references
- oeis: A358444