A032957 - OEIS

%I #12 Feb 12 2021 22:07:21

%S 1,2,3,4,5,6,7,9,11,13,14,16,18,20,21,23,25,27,28,30,32,34,35,37,39,

%T 41,42,44,46,48,49,50,51,52,53,54,55,63,64,65,66,67,68,69,77,78,79,80,

%U 81,82,83,91,92,93,94,95,96,97,98,99,100,101,102

%N Numbers whose base-7 representation Sum_{i=0..m} d(i)*7^(m-i) has even d(i) for all odd i.

%K nonn,base

%O 1,2

%A _Clark Kimberling_

%E Definition corrected by _Sean A. Irvine_, Nov 17 2020