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Number of permutation symbols of type a(n) for hyperbolic archimedean tessellations of rank n.
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%I #7 Oct 01 2016 17:10:13

%S 1,1,1,3,4,12,16,48,64,210,276,947,1252,4510,6028,22406,30364,116506

%N Number of permutation symbols of type a(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 Bisections: A142872, A142873.

%K nonn,more

%O 1,4

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