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A038326
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Triangle whose (i,j)-th entry is binomial(i,j)*11^(i-j)*12^j.
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0
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1, 11, 12, 121, 264, 144, 1331, 4356, 4752, 1728, 14641, 63888, 104544, 76032, 20736, 161051, 878460, 1916640, 2090880, 1140480, 248832, 1771561, 11595672, 31624560, 45999360, 37635840, 16422912, 2985984, 19487171, 148811124
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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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