A195564 Hypotenuses of primitive Pythagorean triples in A195561 and A195562.

1, 25, 41, 65, 1649, 2705, 4289, 108809, 178489, 283009, 7179745, 11777569, 18674305, 473754361, 777141065, 1232221121, 31260608081, 51279532721, 81307919681, 2062726378985, 3383672018521, 5365090477825, 136108680404929

Offset

1,2

Comments

See A195500 for discussion and list of related sequences; see A195562 for Mathematica program.

Links

Table of n, a(n) for n=1..23.

Formula

Empirical g.f.: -x*(x^5+x^4+x^3-41*x^2-25*x-1) / (x^6-66*x^3+1). - Colin Barker, Jun 04 2015

Crossrefs

Cf. A195500, A195562, A195563.

Sequence in context: A309623 A242074 A366428 * A147287 A240758 A031331

Adjacent sequences: A195561 A195562 A195563 * A195565 A195566 A195567

Keyword

nonn

Author

Clark Kimberling, Sep 21 2011

Status

approved