A230712 Values of x such that x^2 + y^2 = 37^n with x and y coprime and 0 < x < y.

1, 12, 107, 840, 5646, 27755, 124158, 462961, 961686, 5589325, 102654282, 1025046359, 8502347874, 64101459205, 356029844147, 1681548425760, 7005476875681, 21848430755052, 2978524660427, 772649642011800

Offset

1,2

Comments

The corresponding y-values are in A230713.

Links

Vincenzo Librandi, Table of n, a(n) for n = 1..200

Example

a(3)=107 because 107^2+198^2=50653=37^3.

Mathematica

Table[Select[PowersRepresentations[37^n, 2, 2], CoprimeQ@@#&][[1, 1]], {n, 1, 40}] (* Vincenzo Librandi, Mar 02 2014 *)

Crossrefs

Cf. A009981, A188948, A230622, A230644, A230710, A230713.

Sequence in context: A089396 A218111 A166755 * A271559 A154671 A321672

Adjacent sequences: A230709 A230710 A230711 * A230713 A230714 A230715

Keyword

nonn

Author

Colin Barker, Oct 28 2013

Status

approved