A032943 Numbers whose base-8 representation Sum_{i=0..m} d(i)*8^(m-i) has d(i)=0 for all odd i.

1, 2, 3, 4, 5, 6, 7, 8, 16, 24, 32, 40, 48, 56, 64, 65, 66, 67, 68, 69, 70, 71, 128, 129, 130, 131, 132, 133, 134, 135, 192, 193, 194, 195, 196, 197, 198, 199, 256, 257, 258, 259, 260, 261, 262, 263, 320, 321, 322, 323, 324, 325, 326

Offset

1,2

Links

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

Maple

b:= 8:
f:= proc(n, j) local L, m;
  L:= convert(n, base, b);
  m:= nops(L);
  j*add(L[i+1]*b^(2*i), i=0..m-1)
end proc:
seq(seq(seq(f(n, j), n=b^k..b^(k+1)-1), j=[1, b]), k=0..2); # Robert Israel, Nov 16 2020

Crossrefs

Cf. A007094 (numbers in base 8).

Sequence in context: A032863 A032887 A023790 * A273735 A257735 A269356

Adjacent sequences: A032940 A032941 A032942 * A032944 A032945 A032946

Keyword

nonn,base

Author

Clark Kimberling

Extensions

Definition corrected by Robert Israel, Nov 16 2020

Status

approved