A195868 - OEIS

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A195868

Positive integers a for which there is a primitive 1-Pythagorean triple (a,b,c) satisfying a<=b.

3, 5, 7, 7, 9, 11, 11, 13, 13, 15, 16, 17, 17, 19, 19, 21, 23, 23, 24, 25, 25, 27, 29, 29, 31, 31, 32, 32, 33, 35, 37, 40, 40, 40, 41, 43, 47, 48, 49, 53, 55, 55, 56

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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..43.

EXAMPLE

Primitive 1-Pythagorean triples

(c^2=a^2+b^2+k*a*b, where k=1):

3,5,7

5,16,19

7,8,13

7,33,37

9,56,61

11,24,31

11,85,91

13,35,43

13,120,127

MATHEMATICA

(See A195770.)

CROSSREFS

Cf. A195770, A195778.

Sequence in context: A307120 A261010 A064002 * A228543 A367928 A254764

Adjacent sequences: A195865 A195866 A195867 * A195869 A195870 A195871

KEYWORD

nonn

AUTHOR

Clark Kimberling, Sep 25 2011

STATUS

approved