Year-end appeal: Please make a donation to the OEIS Foundation to support ongoing development and maintenance of the OEIS. We are now in our 61st year, we have over 378,000 sequences, and we’ve reached 11,000 citations (which often say “discovered thanks to the OEIS”).
%I #12 Aug 06 2021 01:52:36
%S 1,493,495,497,499,1085,1087,1685,1687,2283,2285,2287,2873,2875,3471,
%T 3473,4673,4675,5271,5273,5871,5873,6469,6471,7069,7071,7669,7671,
%U 8267,8269,8271,8273,8859,8861,9457,9459
%N Odd numbers k such that A098548(k) is not a multiple of 3.
%H Reinhard Zumkeller, <a href="/A251540/b251540.txt">Table of n, a(n) for n = 1..1000</a>
%o (Haskell)
%o a251540 n = a251540_list !! (n-1)
%o a251540_list = filter ((> 0) . flip mod 3 . a098548) [1, 3 ..]
%o -- _Reinhard Zumkeller_, Dec 08 2014
%Y Cf. A098548, A001651, A011655.
%K nonn
%O 1,2
%A _N. J. A. Sloane_, Dec 07 2014