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A033644 Base 7 digital convolution sequence. 0
1, 1, 2, 6, 24, 120, 720, 120, 840, 1800, 6240, 26760, 140040, 867000, 280080, 2014080, 4588320, 17793120, 80349120, 437331840, 2784689280, 1311995520, 9666063360, 23268113280, 98802529920, 465014459520, 2621479887360 (list; graph; refs; listen; history; internal format)
OFFSET

0,3

EXAMPLE

Suppose base = 3 and a(0)..a(13) are 1 1 2 1 3 7 6 20 52 6 26 104 32 162. In base 3, 14 = 112, so we convolve the last three terms with 1, 1, 2 to obtain 104*1+32*1+162*2 = 460.

CROSSREFS

Sequence in context: A071088 A177533 A122417 * A178011 A189853 A189857

Adjacent sequences:  A033641 A033642 A033643 * A033645 A033646 A033647

KEYWORD

base,nonn

AUTHOR

David W. Wilson (davidwwilson(AT)comcast.net)

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Last modified February 18 00:14 EST 2012. Contains 206085 sequences.