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A104950
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Primes from merging of 7 successive digits in decimal expansion of the Champernowne Constant.
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1
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4567891, 1112131, 1213141, 8394041, 4757677, 8798081, 8991001, 1111211, 1112113, 1211311, 1711811, 7118119, 3113213, 3413513, 5146147, 7148149, 9170171, 7417517, 7517617, 8919019, 9119219, 5196197, 7198199, 5206207
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OFFSET
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1,1
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LINKS
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Vincenzo Librandi, Table of n, a(n) for n = 1..1000
The first 2,800 digits of the Champernowne Constant as calculated at WorldWideSchool.org.
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MATHEMATICA
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Select[Select[FromDigits/@Partition[Flatten[IntegerDigits/@Range[300]], 7, 1], PrimeQ], IntegerLength[#] == 7&] (* Vincenzo Librandi, Apr 24 2013 *)
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CROSSREFS
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Cf. A033307.
Sequence in context: A234793 A227040 A227039 * A234806 A152964 A129931
Adjacent sequences: A104947 A104948 A104949 * A104951 A104952 A104953
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KEYWORD
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nonn,base
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AUTHOR
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Andrew G. West (WestA(AT)wlu.edu), Mar 29 2005
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EXTENSIONS
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Changed offset from 0 to 1 by Vincenzo Librandi, Apr 24 2013
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STATUS
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approved
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