1,1

Eric Weisstein's World of Mathematics, Heronian Triangle.

A068964(3) = 24: [A000040(24), A000040(25),a(3)] = [89,97,170], with s = (89+97+170)/2 = 178: Area^2 = s*(s-89)*(s-81)*(s-170) = 178*89*81*8 = 10265616 = 3204*3204, therefore A068966(3) = 3204.

Sequence in context: A094651 A065526 A032333 this_sequence A054474 A066917 A032081

Adjacent sequences: A068962 A068963 A068964 this_sequence A068966 A068967 A068968

nonn

Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), Mar 30 2002