The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A195561 Hypotenuses of primitive Pythagorean triples in A195559 and A195560. 4
 1, 5, 109, 289, 1009, 1189, 6485, 141481, 375121, 1309681, 1543321, 8417525, 183642229, 486906769, 1699964929, 2003229469, 10925940965, 238367471761, 632004611041, 2206553168161, 2600190307441, 14181862955045, 309400794703549 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS See A195500 for discussion and list of related sequences; see A195559 for Mathematica program. LINKS Table of n, a(n) for n=1..23. 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 CROSSREFS Cf. A195500, A195559, A195560. Sequence in context: A128110 A316755 A199307 * A142510 A195552 A318292 Adjacent sequences: A195558 A195559 A195560 * A195562 A195563 A195564 KEYWORD nonn AUTHOR Clark Kimberling, Sep 21 2011 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified July 15 02:08 EDT 2024. Contains 374323 sequences. (Running on oeis4.)