A142871 Number of permutation symbols of type *r(n) for hyperbolic archimedean tessellations of rank n.

1, 6, 2, 9, 6, 24, 20, 76, 76, 272, 312, 1100, 1384, 4684, 6512, 23280, 32400, 118272

Offset

1,2

Comments

See Conway et al. for precise definition.

References

J. H. Conway et al., The Symmetries of Things, Peters, 2008, p. 261.

Links

Table of n, a(n) for n=1..18.

Crossrefs

One bisection appears to coincide with A000898. For the other see A142877.

Sequence in context: A213913 A195491 A243453 * A195411 A050235 A223536

Adjacent sequences: A142868 A142869 A142870 * A142872 A142873 A142874

Keyword

nonn,more

Author

N. J. A. Sloane, Oct 03 2008

Status

approved