login
Numbers of form |2^i +- 3^j|.
0

%I #20 Oct 19 2018 09:56:13

%S 0,1,2,3,4,5,7,8,9,10,11,13,15,17,19,23,25,26,28,29,31,33,35,37,41,43,

%T 47,49,55,59,61,63,65,67,73,77,79,80,82,83,85,89,91,97,101,113,115,

%U 119,125,127,129,131,137,139,145,155,175,179,209,211,217,227

%N Numbers of form |2^i +- 3^j|.

%C Based on checking i <= 100 and j <= 60.

%C Existing sequence correct for j <= 200000. - _Sean A. Irvine_, Oct 04 2018

%C 2*k is a term iff 2*k = 3^j +- 1. - _Sean A. Irvine_, Oct 04 2018

%C Existing sequence correct for j <= 10^6. - _David A. Corneth_, Oct 04 2018

%C 3*k is a term iff 3*k = 2^j +- 1. - _Jon E. Schoenfield_, Oct 04 2018

%Y Cf. A014121, A056850.

%K nonn

%O 1,3

%A Richard C. Schroeppel

%E Constraint on search moved from title to comments by _Sean A. Irvine_, Oct 04 2018