1,1

Decimal expansion of the surface area of a cuboctahedron with unit edge length.

Essentially the same sequence of digits as A176394 and A010469. - R. J. Mathar, Jun 10 2021

Table of n, a(n) for n=1..102.

Wikipedia, Cuboctahedron

9.4641016151377545870548926830117447338856...

(MAGMA) SetDefaultRealField(RealField(200)); 6+2*Sqrt(3);

Cf. A020775 (cuboctahedron volume).

Sequence in context: A197155 A153756 A322088 * A139720 A248177 A194826

Adjacent sequences: A343196 A343197 A343198 * A343200 A343203 A343204

cons,nonn,changed

Wesley Ivan Hurt, May 07 2021

approved