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%I #20 Oct 30 2019 08:26:37
%S 7414937,8167213,3426649,9621763,2176301,3565129,5129261,4422619,
%T 6199579,3325859,5905943,7374811,5840699,2028773,2877331,8773319,
%U 9090247,2388259,2599577,1560707,8380787,1132259,1322599,7685653
%N Primes from merging of 7 successive digits in decimal expansion of Catalan's constant.
%H Vincenzo Librandi, <a href="/A104921/b104921.txt">Table of n, a(n) for n = 1..1000</a>
%H Greg Fee, <a href="http://www.gutenberg.org/ebooks/634">Decimal Expansion of Catalan's Constant</a> done to 50000 digits.
%H Eric Weisstein's World of Mathematics, <a href="http://mathworld.wolfram.com/CatalansConstant.html">Catalan's Constant</a>
%t Select[FromDigits/@Partition[RealDigits[Catalan, 10, 1000][[1]], 7, 1], PrimeQ[#]&&#>999999&] (* _Vincenzo Librandi_, Apr 22 2013 *)
%Y Cf. A006752 (Catalan's constant).
%Y Cf. A104916, A104917, A104918, A104919, A104920, A104922, A104923.
%K nonn,base
%O 1,1
%A Andrew G. West (WestA(AT)wlu.edu), Mar 29 2005
%E Changed offset from 0 to 1 by _Vincenzo Librandi_, Apr 22 2013
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