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A038268
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Triangle whose (i,j)-th entry is binomial(i,j)*7^(i-j)*2^j.
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0
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1, 7, 2, 49, 28, 4, 343, 294, 84, 8, 2401, 2744, 1176, 224, 16, 16807, 24010, 13720, 3920, 560, 32, 117649, 201684, 144060, 54880, 11760, 1344, 64, 823543, 1647086, 1411788, 672280, 192080, 32928, 3136, 128, 5764801, 13176688, 13176688
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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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