A120682 Difference between legs of primitive Pythagorean triangles sorted first on hypotenuse, then long leg.

1, 7, 7, 17, 1, 23, 31, 17, 49, 23, 47, 7, 41, 71, 41, 7, 79, 31, 97, 73, 17, 119, 127, 89, 47, 1, 113, 161, 49, 119, 73, 167, 23, 103, 31, 199, 161, 103, 89, 223, 151, 241, 191, 137, 71, 79, 217, 17, 137, 287, 233, 49, 287, 113, 119, 47, 281, 337, 23, 193, 217, 151, 97

Offset

1,2

Links

Ray Chandler, Table of n, a(n) for n = 1..10000

Formula

a(n) = A046087(n) - A046086(n) = A118962(n) - A118961(n).

Mathematica

A[s_Integer] := With[{s6 = StringPadLeft[ToString[s], 6, "0"]}, Cases[ Import["https://oeis.org/A" <> s6 <> "/b" <> s6 <> ".txt", "Table"], {_, _}][[All, 2]]];
A046086 = A@046086;
A046087 = A@046087;
a[n_] := A046087[[n]] - A046086[[n]];
a /@ Range[10000]; (* Jean-François Alcover, Mar 07 2020 *)

Crossrefs

Cf. A120681, A058529, A046086, A046087, A118961, A118962.

Sequence in context: A179886 A214829 A168411 * A152910 A198439 A100635

Adjacent sequences: A120679 A120680 A120681 * A120683 A120684 A120685

Keyword

nonn

Author

Lekraj Beedassy, Jun 24 2006

Extensions

Edited and extended by Ray Chandler, Apr 10 2010

Status

approved