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A182018
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Row square-sums of triangle A210658.
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1
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1, 5, 29, 219, 2011, 20911, 235543, 2801821, 34667941, 441977129, 5768828529, 76743400197, 1037119411309, 14202556969109, 196703352545189, 2751033268619879, 38804220883714919, 551466071408325299, 7889476725800450699, 113542652361590443679
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listen;
history;
text;
internal format)
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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) = sum(sum(binomial(2i,i)/(i+1),i=k..n))^2, k=0..n).
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MATHEMATICA
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Table[Sum[Sum[Binomial[2i, i]/(i+1), {i, k, n}]^2, {k, 0, n}], {n, 0, 40}]
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PROG
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(Maxima) makelist(sum(sum(binomial(2*i, i)/(i+1), i, k, n)^2, k, 0, n), n, 0, 20);
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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