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A070127 Numbers n such that [A070080(n), A070081(n), A070082(n)] is an obtuse integer triangle. +0
10
5, 8, 13, 14, 20, 21, 25, 26, 29, 30, 32, 36, 37, 41, 42, 44, 49, 50, 52, 56, 57, 59, 61, 62, 66, 67, 69, 74, 75, 77, 78, 79, 80, 82, 86, 87, 89, 91, 96, 97, 99, 100, 101, 102, 104, 105, 110, 111, 113, 115, 118, 122, 123, 125, 126, 127 (list; graph; listen)
OFFSET

1,1

LINKS

R. Zumkeller, Integer-sided triangles

EXAMPLE

a(10)=30: [A070080(30), A070081(30), A070082(30)]=[3,5,7], A070085(30)=3^2+5^2-7^2=9+25-49=-15<0.

CROSSREFS

Cf. A070101, A070129, A070130, A070131, A070132, A070133, A070134, A070135, A070128, A070085.

Sequence in context: A124434 A078412 A046038 this_sequence A070128 A030606 A090661

Adjacent sequences: A070124 A070125 A070126 this_sequence A070128 A070129 A070130

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 05 2002

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Last modified September 5 19:27 EDT 2008. Contains 143485 sequences.


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