%I
%S 9,12,15,17,18,22,27,32,34,39,69,70,71,79,128,143,172,226,241,242,248,
%T 269,322,325,403,405,406,420,745,2057,2272,2606,2607,3339,3340,3562,
%U 4116,4117,4446,5985,6834,7116,7117,7490,7669,13386,13388,15148,15149,15150,16040,20162,20163,28990,29043,30023,31745,52880,57447,76954,81990,92560
%N Numbers n such that A248891(n)=3.
%C Sequence A248894 gives terms a(n) such that a(n+1)=a(n)+1.
%Y Cf. A001359, A248891, A248894, A248901, A248902.
%K nonn
%O 1,1
%A _Jahangeer Kholdi_ and _Farideh Firoozbakht_, Nov 22 2014
