A320996 Extremal values of Euler characteristics of polytopes.

1, 1, 0, -2, -5, -9, -14, -34, -69, -125, -209, -461

Offset

1,4

Links

Table of n, a(n) for n=1..12.

H. Hadwiger and P. Mani, On polyhedra with extremal Euler characteristic, J. Combin. Theory, A 17 (1974), 345-349. See p. 346.

Crossrefs

Cf. A006481.

Sequence in context: A377061 A068501 A048071 * A051892 A006599 A013933

Adjacent sequences: A320993 A320994 A320995 * A320997 A320998 A320999

Keyword

sign,more

Author

N. J. A. Sloane, Oct 26 2018

Status

approved