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A033646 Base 9 digital convolution sequence. 0
1, 1, 2, 6, 24, 120, 720, 5040, 40320, 5040, 45360, 95760, 332640, 1426320, 7464240, 46211760, 330946560, 2693784240, 661893120, 6049461600, 13422709440, 52367051520, 236313624960, 1286302227840, 8190440616960, 59905688774400 (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: A152385 A072131 A067455 * A177279 A173848 A154656

Adjacent sequences:  A033643 A033644 A033645 * A033647 A033648 A033649

KEYWORD

base,nonn

AUTHOR

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

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Last modified February 15 09:54 EST 2012. Contains 205763 sequences.