A195558 Hypotenuses of primitive Pythagorean triples in A195556 and A195557.

1, 13, 25, 37, 493, 949, 1405, 18721, 36037, 53353, 710905, 1368457, 2026009, 26995669, 51965329, 76934989, 1025124517, 1973314045, 2921503573, 38927735977, 74933968381, 110940200785, 1478228842609, 2845517484433, 4212806126257

Offset

1,2

Comments

See A195500 for discussion and list of related sequences; see A195556 for Mathematica program.

Links

Table of n, a(n) for n=1..25.

Formula

Empirical g.f.: -x*(x^5+x^4+x^3-25*x^2-13*x-1)/(x^6-38*x^3+1). - Colin Barker, Jun 04 2015

Crossrefs

Cf. A195500, A195556, A195557.

Sequence in context: A264732 A298483 A344900 * A026058 A032697 A125724

Adjacent sequences: A195555 A195556 A195557 * A195559 A195560 A195561

Keyword

nonn

Author

Clark Kimberling, Sep 21 2011

Status

approved