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OFFSET
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0,3
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COMMENTS
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Partial sums of threshold functions of n variables. The subsequence of primes in this partial sum begins: 3, 11, 1363847.
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LINKS
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FORMULA
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EXAMPLE
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a(7) = 0 + 1 + 2 + 8 + 44 + 490 + 14074 + 1349228 = 1363847 is prime.
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CROSSREFS
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KEYWORD
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more,nonn
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AUTHOR
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STATUS
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approved
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