A142871 - OEIS

%I #7 Oct 01 2016 17:12:00

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

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

%C See Conway et al. for precise definition.

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

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

%K nonn,more

%O 1,2

%A _N. J. A. Sloane_, Oct 03 2008