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A026225 a(n) = (1/3)*(s(n+1) - 1), where s = A026224. 8
1, 3, 4, 7, 9, 10, 12, 13, 16, 19, 21, 22, 25, 27, 28, 30, 31, 34, 36, 37, 39, 40, 43, 46, 48, 49, 52, 55, 57, 58, 61, 63, 64, 66, 67, 70, 73, 75, 76, 79, 81, 82, 84, 85, 88, 90, 91, 93, 94, 97, 100, 102, 103, 106, 108, 109, 111, 112, 115 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Numbers of the form (3*i+1)*3^j; see A182828.  Complement of A026179, except for the initial 1 in A026179.

LINKS

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

MATHEMATICA

a[b_] := Table[Mod[n/b^IntegerExponent[n, b], b], {n, 1, 160}]

p[b_, d_] := Flatten[Position[a[b], d]]

p[3, 1]  (* A026225 *)

p[3, 2] (* A026179 without initial 1 *)

(* Clark Kimberling, Oct 19 2016 *)

CROSSREFS

Sequence in context: A088958 A300061 A300789 * A026140 A233010 A263488

Adjacent sequences:  A026222 A026223 A026224 * A026226 A026227 A026228

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified June 19 23:01 EDT 2019. Contains 324222 sequences. (Running on oeis4.)