Rational part of circle radii in nested circles and hexagons (see comment).

A255162

Rational part of circle radii in nested circles and hexagons (see comment).

Terms

    a(0) =2a(1) =0a(2) =24a(3) =-288a(4) =3744a(5) =-48384a(6) =625536a(7) =-8087040a(8) =104550912a(9) =-1351655424a(10) =17474476032a(11) =-225913577472

External references