A196386 - OEIS

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A196386

Positive integers a for which there is a primitive (-5)-Pythagorean triple (a,b,c) satisfying a<=b.

1, 1, 3, 3, 5, 5, 5, 5, 7, 7, 8, 8, 8, 8, 9, 9, 11, 11, 11, 11, 13, 13, 13, 15, 15, 15, 16, 16, 16, 16, 17, 17, 17, 19, 19, 19, 21, 23, 23, 24, 24, 24, 24, 25, 25, 27, 29, 29, 31, 31, 32, 32, 32, 33, 33, 35, 35, 37, 39, 39, 40, 40, 40, 40, 40, 40, 40, 41

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OFFSET

1,3

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)-Pythagorean triples a,b,c;

c^2=a^2+b^2-5*a*b:

1,5,1

1,8,5