A104950 Primes from merging of 7 successive digits in decimal expansion of the Champernowne Constant.

4567891, 1112131, 1213141, 8394041, 4757677, 8798081, 8991001, 1111211, 1112113, 1211311, 1711811, 7118119, 3113213, 3413513, 5146147, 7148149, 9170171, 7417517, 7517617, 8919019, 9119219, 5196197, 7198199, 5206207

Offset

1,1

Links

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.

Mathematica

Select[Select[FromDigits/@Partition[Flatten[IntegerDigits/@Range[300]], 7, 1], PrimeQ], IntegerLength[#] == 7&] (* Vincenzo Librandi, Apr 24 2013 *)

Crossrefs

Cf. A033307.

Sequence in context: A234793 A227040 A227039 * A234806 A152964 A129931

Adjacent sequences: A104947 A104948 A104949 * A104951 A104952 A104953

Keyword

nonn,base

Author

Andrew G. West (WestA(AT)wlu.edu), Mar 29 2005

Extensions

Changed offset from 0 to 1 by Vincenzo Librandi, Apr 24 2013

Status

approved