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Search: id:A033646
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| A033646 |
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Base 9 digital convolution sequence. |
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+0
1
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| 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; listen)
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OFFSET
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0,3
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EXAMPLE
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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.
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CROSSREFS
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Adjacent sequences: A033643 A033644 A033645 this_sequence A033647 A033648 A033649
Sequence in context: A045977 A072131 A067455 this_sequence A054873 A072132 A066459
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KEYWORD
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base,nonn
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AUTHOR
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David W. Wilson (davidwwilson(AT)comcast.net)
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