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%I #6 Mar 31 2012 13:22:05
%S 9561,924591,10306101,40379541,45964621,13860931,97601931,206197461,
%T 39350401,70495851,736139881,120414601,614399751,422650131,862677661,
%U 5344474491,1622536021,502698841,3425985241,806838691,4484608141
%N Least K such that 10^(10*n-1) + K + 6*s are consecutive primes for s=0, s=1, s=2, s=3.
%e 10^9+9561, 10^9+9561+6, 10^9+9561+12, 10^9+9561+18 are consecutive primes so K(1)=9561 (no number < 9561 give 4 consecutive primes).
%K hard,nonn
%O 1,1
%A _Pierre CAMI_, Nov 27 2007
%E a(6)-a(10) corrected and a(11)-a(21) added by _Donovan Johnson_, Nov 11 2008