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A033923 Base 3 digital convolution sequence. 0
1, 1, 2, 1, 2, 3, 2, 3, 4, 2, 3, 4, 3, 4, 5, 4, 5, 6, 4, 5, 6, 5, 6, 7, 6, 7, 8, 1, 2, 3, 2, 3, 4, 3, 4, 5, 3, 4, 5, 4, 5, 6, 5, 6, 7, 5, 6, 7, 6, 7, 8, 7, 8, 9, 2, 3, 4, 3, 4, 5, 4, 5, 6, 4, 5, 6, 5, 6, 7, 6, 7, 8, 6, 7, 8, 7, 8, 9, 8, 9, 10, 2, 3, 4, 3, 4, 5, 4, 5, 6, 4, 5, 6, 5, 6, 7, 6, 7, 8, 6, 7, 8, 7, 8 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..104.

FORMULA

For example, 22 = 211 in base 3, so a(22) = 2a(2)+1a(1)+1a(0).

CROSSREFS

Sequence in context: A317192 A053735 A033667 * A233420 A220098 A246017

Adjacent sequences:  A033920 A033921 A033922 * A033924 A033925 A033926

KEYWORD

nonn,base

AUTHOR

David W. Wilson

STATUS

approved

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Last modified June 20 17:43 EDT 2021. Contains 345199 sequences. (Running on oeis4.)