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1, 3, 27, 173, 2213, 1239065, 1178661599, 537440137205, 4498684093801517, 397866367316299082571, 521505356993412536753131, 132101530036167237378528466705275, 1271578712351105027090700191735899429869, 33189191375129970683761258266358875688948789
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listen;
history;
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internal format)
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OFFSET
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1,2
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LINKS
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FORMULA
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Numerators of sequence a[ 1, n ] in (a[ i, j ])^2 where a[ i, j ] = S(i, j)/BellNumber(i) if j<=i, 0 if j>i.
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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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