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%I #6 Jul 15 2018 13:08:02
%S 1,2,5,9,35,62,195,126,186,28,230,57,26,170,280,270,265,1008,56,398,
%T 473,376,32,581,3204,903,898,206,1581,2330,2012,370,1512,2119,1548,
%U 345,646,3481,241,1871,2763,995,2304,460,633,2338,3801,5138,4472,973,4117,2286
%N Index of first occurrence of n in A090290, or 0 if n does not occur in A090290.
%C 10^(n) -prime(a(n)) is a prime and least such prime. Conjecture: No term is zero.
%e a(3) = 9, 10^3-prime(i) is not a prime for i = 1 to 8. prime(9) = 23, 10^3 - 23= 977 is a prime.
%Y Cf. A090289, A090290.
%K base,nonn
%O 1,2
%A _Amarnath Murthy_, Nov 29 2003
%E More terms from _David Wasserman_, Oct 27 2005
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