A033644 Base 7 digital convolution sequence.

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

Links

Table of n, a(n) for n=0..26.

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

Adjacent sequences: A033641 A033642 A033643 * A033645 A033646 A033647

Keyword

base,nonn

Author

David W. Wilson

Status

approved