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Search: id:A051318
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| A051318 |
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Euclid-Mullin sequence (A000945) with initial value a(1)=43 instead of a(1)=2. |
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| 43, 2, 3, 7, 13, 53, 5, 6221671, 38709183810571, 139, 2801, 11, 17, 5471, 52662739, 23003, 30693651606209, 37, 1741, 1313797957, 887, 71, 7127, 109, 23, 97, 159227, 643679794963466223081509857, 103, 1079990819
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OFFSET
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1,1
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EXAMPLE
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Product of first 28 terms +1 is 21010249180666094569052503746125873711733988256859070017267798713596976643298037544232424110733238484973548134278212304532631, which is divisible by 103. Hence a(29)=103.
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MATHEMATICA
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a[ n_+1 ] := First[ Flatten[ FactorInteger[ 1+Product[ a[ j ], {j, 1, n} ] ] ] ]
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CROSSREFS
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Agrees with A000945 from 5th term. Cf. A000946, A005265, A005266.
Sequence in context: A070177 A114786 A139424 this_sequence A036202 A107814 A093762
Adjacent sequences: A051315 A051316 A051317 this_sequence A051319 A051320 A051321
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KEYWORD
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easy,nonn
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AUTHOR
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Labos E. (labos(AT)ana.sote.hu)
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