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A227991
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Highest power of 3 dividing prime(n)+1.
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2
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3, 1, 3, 1, 3, 1, 9, 1, 3, 3, 1, 1, 3, 1, 3, 27, 3, 1, 1, 9, 1, 1, 3, 9, 1, 3, 1, 27, 1, 3, 1, 3, 3, 1, 3, 1, 1, 1, 3, 3, 9, 1, 3, 1, 9, 1, 1, 1, 3, 1, 9, 3, 1, 9, 3, 3, 27, 1, 1, 3, 1, 3, 1, 3, 1, 3, 1, 1, 3, 1, 3, 9, 1, 1, 1, 3, 3, 1, 3, 1, 3, 1, 27, 1, 1, 3, 9
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OFFSET
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1,1
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LINKS
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FORMULA
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MATHEMATICA
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Table[3^IntegerExponent[Prime[n] + 1, 3], {n, 100}]
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PROG
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(PARI) forprime(p=2, 700, print1(3^valuation(p+1, 3), ", "));
(Magma) [3^Valuation(NthPrime(n)+1, 3): n in [1..100]];
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CROSSREFS
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Cf. A068503 (highest power of 3 dividing prime(n)-1), A068504 (highest power of 2 dividing prime(n)+1), A227990.
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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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