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A196379
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Positive integers a for which there is a primitive (-4)-Pythagorean triple (a,b,c) satisfying a<=b.
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6
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1, 3, 4, 4, 5, 5, 7, 7, 8, 8, 9, 11, 11, 12, 12, 13, 13, 15, 15, 16, 16, 17, 17, 19, 19, 20, 20, 20, 20, 21, 21, 23, 23, 24, 24, 25, 28, 28, 28, 28, 29, 31, 32, 32, 33, 35, 35, 35, 36, 37, 39, 40, 40, 40, 44, 44, 44, 45, 48, 51, 52, 52, 52, 55, 55, 56, 56
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OFFSET
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1,2
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COMMENTS
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See A195770 for definitions of k-Pythagorean triple, primitive k-Pythagorean triple, and lists of related sequences.
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LINKS
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EXAMPLE
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Primitive (-4)-Pythagorean triples a,b,c;
c^2=a^2+b^2+k*a*b, where k=-4:
1,4,1
3,20,13
4,15,1
4,21,11
5,24,11
5,48,37
7,40,23
7,88,73
8,35,13
8,65,47
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MATHEMATICA
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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