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A196365 Positive integers a for which there is a primitive (-5/2)-Pythagorean triple (a,b,c) satisfying a<=b. 6
2, 3, 5, 7, 7, 10, 10, 11, 11, 13, 14, 15, 15, 16, 16, 16, 17, 18, 19, 19, 22, 23, 23, 25, 26, 26, 27, 29, 31, 32, 32, 32, 34, 34, 35, 35, 35, 37, 38, 39, 41, 42, 43, 46, 47, 48, 48, 50, 51, 55, 55, 55, 58, 59, 62, 63, 64, 64, 64, 65, 66, 67, 70, 71, 74, 75, 77, 79 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

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

LINKS

Table of n, a(n) for n=1..68.

EXAMPLE

Primitive (-5/2)-Pythagorean triples a,b,c;

c^2=a^2+b^2-(5/2)*a*b:

2,5,2

3,14,10

5,16,9

7,16,5

7,64,55

10,21,4

10,69,56

11,30,14

11,150,136

13,80,63

MATHEMATICA

(See A196362.)

CROSSREFS

Cf. A195770, A196362, A196366, A196367.

Sequence in context: A296375 A306923 A137750 * A195882 A156900 A039734

Adjacent sequences:  A196362 A196363 A196364 * A196366 A196367 A196368

KEYWORD

nonn

AUTHOR

Clark Kimberling, Oct 01 2011

STATUS

approved

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Last modified May 19 04:06 EDT 2019. Contains 323377 sequences. (Running on oeis4.)