A104916 - OEIS

%I #20 Oct 30 2019 08:27:34

%S 59,59,41,17,19,23,41,11,41,37,67,13,11,19,17,19,97,47,47,79,29,61,11,

%T 61,19,19,61,19,79,89,59,59,43,31,59,47,73,37,11,53,73,31,19,19,47,59,

%U 47,41,23,59,41,97,47,11,83,73,37,89,47,11,13,59,97,71,13,43,53,23,53

%N Primes from merging of 2 successive digits in decimal expansion of Catalan's constant.

%H Vincenzo Librandi, <a href="/A104916/b104916.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, 100][[1]], 2, 1], PrimeQ[#]&&#>9&] (* _Vincenzo Librandi_, Apr 23 2013 *)

%Y Cf. A006752 (Catalan's constant).

%Y Cf. A104917, A104918, A104919, A104920, A104921, 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 23 2013