A070124 Numbers n such that [A070080(n), A070081(n), A070082(n)] is an acute isosceles integer triangle.

1, 2, 3, 4, 6, 7, 9, 10, 11, 12, 15, 16, 18, 19, 22, 23, 24, 27, 28, 31, 34, 35, 38, 39, 40, 43, 46, 47, 48, 51, 54, 55, 58, 63, 64, 65, 68, 71, 72, 73, 76, 81, 84, 85, 88, 93, 94, 95, 98, 103, 107, 108, 109, 112, 117, 120, 121, 124, 129

Offset

1,2

Links

Table of n, a(n) for n=1..59.

R. Zumkeller, Integer-sided triangles

Example

a(13)=18: [A070080(18), A070081(18), A070082(18)]=[4=4=4], A070085(18)=4^2+4^2-4^2=16>0.

Crossrefs

Cf. A070098, A070126, A070125, A070115, A070118.

Sequence in context: A039054 A047519 A070118 * A059097 A047301 A186275

Adjacent sequences: A070121 A070122 A070123 * A070125 A070126 A070127

Keyword

nonn

Author

Reinhard Zumkeller, May 05 2002

Status

approved