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A033644
Base 7 digital convolution sequence.
3
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
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: A370384 A122417 A321008 * A212309 A319546 A232983
KEYWORD
base,nonn
STATUS
approved