%I A114789
%S A114789 1,3,7,169,677,1355,2711,4304496906163,1852869361516769972676380161,
%T A114789 66703297014603719016349685797,400219782087622314098098114783,
%U A114789 31217143002834540499651652953075,307176687147891878516572265058259
%N A114789 a(1) = 1, a(2) = 3 and thereafter a(n) is the smallest number congruent 
               to 1 mod a(n-1) and having the prime signatute of n.
%e A114789 a(4) = 169 = 13^2 has a prime signature of 4 = 2^2 and 169 == 1 (mod 
               7 = a(3)).
%Y A114789 Sequence in context: A006031 A119958 A031881 this_sequence A128273 A105763 
               A132564
%Y A114789 Adjacent sequences: A114786 A114787 A114788 this_sequence A114790 A114791 
               A114792
%K A114789 nonn
%O A114789 1,2
%A A114789 Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Jan 05 2006
%E A114789 Corrected and extended by Joshua Zucker (joshua.zucker(AT)stanfordalumni.org), 
               May 07 2006