Search: id:A061558
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%I A061558
%S A061558 0,1,2,6,6,30,150,1210230,32671170,224494620,1536160080,1482708889200,
%T A061558 9918821194590,266029822978920,266029822978920,11358256064006271420,
%U A061558 341976204789992332560
%N A061558 Smallest difference of an increasing arithmetic progression of n primes 
               with the (conjectural) smallest possible first term A007918(n).
%C A061558 Apart from the initial term, does this sequence coincide with A113461? 
               - N. J. A. Sloane (njas(AT)research.att.com), Sep 22 2007
%H A061558 <a href="Sindx_Pri.html#primes_AP">Index entries for sequences related 
               to primes in arithmetic progressions</a>
%e A061558 For n = 10, the smallest difference a(10) = 224494620 with the first 
               term 11 (= A007918(10)) producing an arithmetic progression of 10 
               primes.
%Y A061558 Cf. A007918 (initial terms), A120302 (last terms), A130791 (triangle).
%Y A061558 Sequence in context: A033188 A093364 A113461 this_sequence A123144 A069260 
               A056603
%Y A061558 Adjacent sequences: A061555 A061556 A061557 this_sequence A061559 A061560 
               A061561
%K A061558 nonn,hard
%O A061558 1,3
%A A061558 Gennady Gusev (ggn(AT)rm.yaroslavl.ru), May 17, 2001
%E A061558 a(16) and a(17) found by P. Carmody. - Gennady Gusev (gennady.gusev(AT)np-saturn.ru), 
               Oct 07 2005
%E A061558 a(0) deleted by N. J. A. Sloane (njas(AT)research.att.com), Sep 22 2007

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