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

Author

David W. Wilson

Keywords

• nonn
• base

Formula

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