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A235396
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Indices of primes in the tribonacci-like sequence, A081172.
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0
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3, 4, 5, 9, 12, 16, 24, 32, 101, 116, 245, 34553, 52517, 99245, 140197
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OFFSET
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1,1
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COMMENTS
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a(16) > 2*10^5.
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LINKS
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MATHEMATICA
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a={1, 1, 0}; For[n=3, n<=1000, n++, sum=Plus@@a; If[PrimeQ[sum], Print[n]]; a=RotateLeft[a]; a[[3]]=sum]
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CROSSREFS
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Cf. A001590, A100683, A231574, A231575, A232542, A214899, A230607, A020992, A232498, A214727, A081172, A214752.
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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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