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A033666 Base 2 digital convolution sequence, (with smallest digits). +0
1
1, 1, 1, 2, 1, 2, 2, 3, 1, 3, 2, 4, 2, 4, 3, 5, 1, 2, 3, 4, 2, 3, 4, 5, 2, 3, 4, 5, 3, 4, 5, 6, 1, 3, 2, 4, 3, 5, 4, 6, 2, 4, 3, 5, 4, 6, 5, 7, 2, 4, 3, 5, 4, 6, 5, 7, 3, 5, 4, 6, 5, 7, 6, 8, 1, 3, 3, 5, 2, 4, 4, 6, 3, 5, 5, 7, 4, 6, 6, 8, 2, 4, 4, 6, 3, 5, 5, 7, 4, 6, 6, 8, 5, 7, 7, 9, 2, 4, 4, 6, 3, 5 (list; graph; listen)
OFFSET

0,4

LINKS

Michael Gilleland, Some Self-Similar Integer Sequences

MATHEMATICA

c[ 0, _ ] := 1; c[ n_, b_ ] := c[ n, b ]=Module[ {mul}, mul=IntegerDigits[ n, b ]; Table[ c[ i, b ], {i, 0, Length[ mul ]-1} ].mul ]

CROSSREFS

Sequence in context: A109400 A000374 A120562 this_sequence A139124 A024160 A103284

Adjacent sequences: A033663 A033664 A033665 this_sequence A033667 A033668 A033669

KEYWORD

nonn

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net), Wouter Meeussen (wouter.meeussen(AT)pandora.be)

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Last modified November 30 13:13 EST 2009. Contains 167758 sequences.


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