%I A089008
%S A089008 1,2,3,7,8,9,10,11,12,14,15,22,24,25,29,31,32,33,34,35,41,44,45,51,52,
%T A089008 54,59,62,63,67,68,73,76,79,80,85,88,91,95,99,100,102,107,108,109,117,
%U A089008 119,120,122,125,129,131,133,135,139,141,142,143,147,150,152,154,156
%N A089008 Numbers n such that 18*n^2 + 1 is prime.
%H A089008 Zak Seidov, <a href="b089008.txt">Table of n, a(n) for n = 1..1000.</
               a>
%F A089008 a(n)=A089001(n+1)/3.
%Y A089008 Cf. A089001, A090612, A090698.
%Y A089008 Sequence in context: A056431 A011027 A100072 this_sequence A047534 A118374 
               A154432
%Y A089008 Adjacent sequences: A089005 A089006 A089007 this_sequence A089009 A089010 
               A089011
%K A089008 nonn
%O A089008 1,2
%A A089008 N. J. A. Sloane (njas(AT)research.att.com), Dec 20 2003