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A038242
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Triangle whose (i,j)-th entry is binomial(i,j)*4^(i-j)*12^j.
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0
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1, 4, 12, 16, 96, 144, 64, 576, 1728, 1728, 256, 3072, 13824, 27648, 20736, 1024, 15360, 92160, 276480, 414720, 248832, 4096, 73728, 552960, 2211840, 4976640, 5971968, 2985984, 16384, 344064, 3096576, 15482880, 46448640, 83607552
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listen;
history;
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OFFSET
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0,2
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REFERENCES
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B. N. Cyvin et al., Isomer enumeration of unbranched catacondensed polygonal systems with pentagons and heptagons, Match, No. 34 (Oct 1996), pp. 109-121.
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CROSSREFS
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KEYWORD
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AUTHOR
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STATUS
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approved
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