A032956 Numbers whose base-6 representation Sum_{i=0..m} d(i)*6^(m-i) has even d(i) for all odd i.

1, 2, 3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 37, 38, 39, 40, 41, 48, 49, 50, 51, 52, 53, 60, 61, 62, 63, 64, 65, 72, 73, 74, 75, 76, 77, 84, 85, 86, 87, 88, 89, 96, 97, 98, 99, 100, 101, 108, 109, 110, 111, 112

Offset

1,2

Links

Robert Israel, Table of n, a(n) for n = 1..10000

Maple

filter:= proc(n) local L, i;
  L:= convert(n, base, 6);
  andmap(t -> type(L[t], even), [seq(i, i=nops(L)-1 .. 1, -2)])
end proc:
select(filter, [$1..200]); # Robert Israel, Jun 02 2026

Crossrefs

Sequence in context: A182764 A045880 A273011 * A004272 A004279 A274039

Adjacent sequences: A032953 A032954 A032955 * A032957 A032958 A032959

Keyword

nonn,base

Author

Clark Kimberling

Extensions

Definition corrected by Sean A. Irvine, Nov 17 2020

Status

approved