A033923 Base 3 digital convolution sequence.

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

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: A053735 A359361 A033667 * A233420 A220098 A246017

Adjacent sequences: A033920 A033921 A033922 * A033924 A033925 A033926

Keyword

nonn,base

Author

David W. Wilson

Status

approved