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A038226
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Triangle read by rows: (i,j)-th entry is binomial(i,j)*3^(i-j)*8^j.
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0
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1, 3, 8, 9, 48, 64, 27, 216, 576, 512, 81, 864, 3456, 6144, 4096, 243, 3240, 17280, 46080, 61440, 32768, 729, 11664, 77760, 276480, 552960, 589824, 262144, 2187, 40824, 326592, 1451520, 3870720, 6193152, 5505024, 2097152, 6561
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
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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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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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