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 A033666 Base 2 digital convolution sequence, (with smallest digits). 0
 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; refs; listen; history; text; internal format)
 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: A000374 A120562 A178692 * A139124 A024160 A103284 Adjacent sequences:  A033663 A033664 A033665 * A033667 A033668 A033669 KEYWORD nonn,base AUTHOR STATUS approved

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