OFFSET

1,1

LINKS

Eric Weisstein's World of Mathematics, Incircle.

EXAMPLE

a(1) = 12 because (3,4,5) is the smallest integer-sided triangle with an integer inradius and this integer radius = 1.

a(2) = 36 and the 2 corresponding triangles are (9,10,17) with r=2 and (9,12,15) with r=3.

a(3) = 60 and the 3 corresponding triangles are (6,25,29) with r=2, (10,24,26) with r=4 and (15,20,25) with r=5.

CROSSREFS

KEYWORD

nonn

AUTHOR

Bernard Schott, Oct 28 2020

EXTENSIONS

More terms from Amiram Eldar, Oct 28 2020

STATUS

approved