Search: a256499 -id:a256499
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A256498
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Indices of primes in the 9th-order Fibonacci number sequence, A127193.
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+10
1
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11, 15, 25, 31, 36, 37, 42, 45, 48, 75, 149, 156, 160, 182, 268, 444, 581, 1025, 1125, 2504, 6900, 10924, 11807, 25262, 26774, 28739, 29367, 34902, 43345, 53878, 74473, 107070, 170300, 178994
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OFFSET
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1,1
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COMMENTS
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a(35) > 2*10^5.
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LINKS
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MATHEMATICA
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a={1, 1, 1, 1, 1, 1, 1, 1, 1}; step=9; lst={}; For[n=step+1, n<=1000, n++, sum=Plus@@a; If[PrimeQ[sum], AppendTo[lst, n]]; a=RotateLeft[a]; a[[step]]=sum]; lst
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CROSSREFS
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KEYWORD
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nonn,more
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AUTHOR
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STATUS
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approved
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