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Search: id:A033644
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| A033644 |
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Base 7 digital convolution sequence. |
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+0
1
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| 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; 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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Sequence in context: A047890 A071088 A122417 this_sequence A154654 A070947 A060727
Adjacent sequences: A033641 A033642 A033643 this_sequence A033645 A033646 A033647
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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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