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A038266
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Triangle whose (i,j)-th entry is binomial(i,j)*6^(i-j)*12^j.
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0
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1, 6, 12, 36, 144, 144, 216, 1296, 2592, 1728, 1296, 10368, 31104, 41472, 20736, 7776, 77760, 311040, 622080, 622080, 248832, 46656, 559872, 2799360, 7464960, 11197440, 8957952, 2985984, 279936, 3919104, 23514624, 78382080, 156764160
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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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LINKS
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MATHEMATICA
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Table[Binomial[i, j]6^(i-j) 12^j, {i, 0, 10}, {j, 0, i}]//Flatten (* Harvey P. Dale, Jul 28 2017 *)
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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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