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A038247
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Triangle whose (i,j)-th entry is binomial(i,j)*5^(i-j)*5^j.
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1
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1, 5, 5, 25, 50, 25, 125, 375, 375, 125, 625, 2500, 3750, 2500, 625, 3125, 15625, 31250, 31250, 15625, 3125, 15625, 93750, 234375, 312500, 234375, 93750, 15625, 78125, 546875, 1640625, 2734375, 2734375, 1640625, 546875, 78125
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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]5^(i-j) 5^j, {i, 0, 10}, {j, 0, i}]//Flatten (* Harvey P. Dale, May 01 2022 *)
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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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