login
This site is supported by donations to The OEIS Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A025307 Numbers that are the sum of 2 distinct nonzero squares in exactly 6 ways. 1

%I

%S 5525,9425,11050,12025,12325,13325,14365,15725,17225,17425,18785,

%T 18850,19825,21125,22100,22525,23725,24050,24505,24650,25925,26650,

%U 26825,28730,28925,29725,31025,31265,31450,31525,32825,34450,34645,34850,35425,36125

%N Numbers that are the sum of 2 distinct nonzero squares in exactly 6 ways.

%H Donovan Johnson, <a href="/A025307/b025307.txt">Table of n, a(n) for n = 1..1000</a>

%H <a href="/index/Su#ssq">Index entries for sequences related to sums of squares</a>

%t nn = 36125; t = Table[0, {nn}]; lim = Floor[Sqrt[nn - 1]]; Do[num = i^2 + j^2; If[num <= nn, t[[num]]++], {i, lim}, {j, i - 1}]; Flatten[Position[t, 6]] (* _T. D. Noe_, Apr 07 2011 *)

%K nonn

%O 1,1

%A _David W. Wilson_

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified November 19 11:09 EST 2019. Contains 329319 sequences. (Running on oeis4.)