A394688 Smallest number that differs from all previous terms at at least half of its binary digit positions; a(1) = 0.

0, 1, 2, 3, 12, 15, 52, 57, 213, 218, 230, 854, 872, 933, 3443, 3754, 3869, 13758, 14025, 14975, 15248, 56644, 63267, 224647, 241396, 251385, 252442, 910926, 977320, 1028373, 3635297, 3988103, 4146994, 14507004, 16053272, 16164847, 57613535, 58303936, 62515519

Offset

1,3

Links

Sean A. Irvine, Table of n, a(n) for n = 1..59

Example

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}.

Crossrefs

Sequence in context: A290168 A124486 A260908 * A123761 A181121 A345362

Adjacent sequences: A394685 A394686 A394687 * A394689 A394690 A394691

Keyword

base,nonn

Author

Bert Dobbelaere, Mar 28 2026

Extensions

More terms from Sean A. Irvine, Apr 02 2026

Status

approved