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A369474
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Number of chiral pairs of polyominoes composed of n pentachoral cells of the hyperbolic regular tiling with Schläfli symbol {3,3,3,oo}.
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1
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0, 0, 0, 0, 1, 10, 80, 611, 4602, 34791, 265606, 2054034, 16094883, 127693729, 1024649237, 8306343347, 67952829212, 560471786912, 4656785469564, 38948533963500, 327715193729107, 2772468576820531
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OFFSET
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1,6
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COMMENTS
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Also number of chiral pairs of simplicial 4-clusters or stack polytopes with n pentachoral cells. Each member of a chiral pair is a reflection but not a rotation of the other. Some of the h(4,n) terms in the Hering article are in error, including the 6th, 8th and 9th.
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LINKS
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FORMULA
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a(n) = h(4,n) - H(4,n) in Table 8 of Hering link.
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CROSSREFS
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This is the half the difference of A007175 and A182299, both of which have Mathematica programs.
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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