A195561 Hypotenuses of primitive Pythagorean triples in A195559 and A195560.

1, 5, 109, 289, 1009, 1189, 6485, 141481, 375121, 1309681, 1543321, 8417525, 183642229, 486906769, 1699964929, 2003229469, 10925940965, 238367471761, 632004611041, 2206553168161, 2600190307441, 14181862955045, 309400794703549

Offset: 1

Author

Clark Kimberling, Sep 21 2011

Keywords

• nonn

Comments

See A195500 for discussion and list of related sequences; see A195559 for Mathematica program.

Crossrefs

Cf. A195500, A195559, A195560.

Formula

Empirical g.f.: -x*(x^9+x^8+x^7+5*x^6+109*x^5-1009*x^4-289*x^3-109*x^2-5*x-1) / (x^10-1298*x^5+1). - Colin Barker, Jun 04 2015