A394688 - OEIS

%I #10 Apr 02 2026 23:31:57

%S 0,1,2,3,12,15,52,57,213,218,230,854,872,933,3443,3754,3869,13758,

%T 14025,14975,15248,56644,63267,224647,241396,251385,252442,910926,

%U 977320,1028373,3635297,3988103,4146994,14507004,16053272,16164847,57613535,58303936,62515519

%N Smallest number that differs from all previous terms at at least half of its binary digit positions; a(1) = 0.

%H Sean A. Irvine, <a href="/A394688/b394688.txt">Table of n, a(n) for n = 1..59</a>

%e 12 = 1100_2 is the smallest number differing at at least half of its binary positions from each of {0000_2, 0001_2, 0010_2, 0011_2}.

%K base,nonn

%O 1,3

%A _Bert Dobbelaere_, Mar 28 2026

%E More terms from _Sean A. Irvine_, Apr 02 2026