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A134372
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a(n) = ((2n)!)^2.
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6
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1, 4, 576, 518400, 1625702400, 13168189440000, 229442532802560000, 7600054456551997440000, 437763136697395052544000000, 40990389067797283140009984000000, 5919012181389927685417441689600000000
(list;
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refs;
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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Sum_{n>=0} (-1)^n/a(n) = A334632. (End)
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MATHEMATICA
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Table[((2n)!)^(2), {n, 0, 10}]
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PROG
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CROSSREFS
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Cf. A000142, A001044, A000442, A036740, A010050, A134366, A134367, A134368, A134369, A134371, A134374, A134375, A334379, A334632.
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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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