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A036083
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Expansion of (-1+1/(1-5*x)^5)/(25*x); related to A036071.
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6
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1, 15, 175, 1750, 15750, 131250, 1031250, 7734375, 55859375, 391015625, 2666015625, 17773437500, 116210937500, 747070312500, 4731445312500, 29571533203125, 182647705078125, 1116180419921875, 6755828857421875
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OFFSET
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0,2
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LINKS
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FORMULA
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a(n) = 5^(n-1)*binomial(n+5, 4);
g.f. (-1+(1-5*x)^(-5))/(x*5^2).
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PROG
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(Sage)[lucas_number2(n, 5, 0)*binomial(n, 4)/5^6 for n in range(5, 24)] # Zerinvary Lajos, Mar 13 2009
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CROSSREFS
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KEYWORD
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easy,nonn
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AUTHOR
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STATUS
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approved
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