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35, 255255, 100280245065, 2152114239059719935, 1952792905443446363385953865, 40347439369046572433179287578305731225, 772786810821609466400679930812513688804332910188025, 73222791895598040395939625423986137213129917738912050041051075
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OFFSET
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1,1
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COMMENTS
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Conjecture: the factorization of a(n) contains all primes 5 < p < 2*(n+1)^2.
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LINKS
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MATHEMATICA
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a388[i_] := Numerator[2^(1 - 2 i^2) i Binomial[2 i^2, i^2]]; a389[i_] := Denominator[2^(1 - 2 i^2) i Binomial[2 i^2, i^2]]; Denominator[Table[Sum[(a388[i]/a389[i])/((a388[i + 1]/a389[i + 1])), {i, 1, n}], {n, 1, 10}]]
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CROSSREFS
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KEYWORD
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nonn,frac
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AUTHOR
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STATUS
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approved
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