A142868 Number of permutation symbols of type .a(n) for hyperbolic archimedean tessellations of rank 2n.

0, 0, 1, 3, 17, 74, 343, 1603, 7807

Offset

1,4

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..9.

Crossrefs

Sequence in context: A339647 A191587 A290411 * A171875 A356390 A100233

Adjacent sequences: A142865 A142866 A142867 * A142869 A142870 A142871

Keyword

nonn,more

Author

N. J. A. Sloane, Oct 03 2008

Status

approved