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

 Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 59th year, we have over 358,000 sequences, and we’ve crossed 10,300 citations (which often say “discovered thanks to the OEIS”). Other ways to Give
 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A195921 Positive integers c for which there is a primitive (-3/2)-Pythagorean triple (a,b,c) satisfying a<=b. 5

%I

%S 2,3,5,7,9,10,11,13,15,15,15,16,17,18,19,22,23,25,26,27,29,30,32,32,

%T 33,34,35,37,38,39,41,42,45,46,48,48,48,48,51,53,54,55,57,57,61,62,63,

%U 64,64,65,66,69,69,73,75,78,78,80,80,80,86,87,90,90,93,94,95,96

%N Positive integers c for which there is a primitive (-3/2)-Pythagorean triple (a,b,c) satisfying a<=b.

%C See A195770 for definitions of k-Pythagorean triple, primitive k-Pythagorean triple, and lists of related sequences.

%e Primitive (-3/2)-Pythagorean triples

%e (c^2=a^2+b^2+k*a*b, where k=-3/2):

%e 2,3,2

%e 3,10,8

%e 5,6,4

%e 7,48,43

%e 9,16,11

%e 10,51,44

%e 11,114,106

%e 13,30,22

%e 15,16,11

%e 15,32,23

%t (See A195918.)

%Y Cf. A195770, A195918, A195922, A195923.

%K nonn

%O 1,1

%A _Clark Kimberling_, Sep 26 2011

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 November 27 12:40 EST 2022. Contains 358405 sequences. (Running on oeis4.)