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A098696
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Main diagonal of array in A073146.
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3
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1, 4, 104, 6544, 765344, 143639104, 39511297664, 14979797833984, 7487442077817344, 4770988535512474624, 3774873839360539879424, 3630982576832133263233024, 4172729918808369709126098944
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OFFSET
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0,2
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COMMENTS
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Diagonal of Euler-Seidel matrix with start sequence A000670.
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LINKS
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FORMULA
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a(n) = Sum_{k=0..n} binomial(n, k) * A000670(2*n-k).
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MATHEMATICA
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Table[Sum[Binomial[n, k] * Sum[StirlingS2[2*n-k, j]*j!, {j, 0, 2*n-k}], {k, 0, n}], {n, 0, 20}] (* Vaclav Kotesovec, May 03 2015 *)
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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