A033646 Base 9 digital convolution sequence.

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

Offset

0,3

Links

Table of n, a(n) for n=0..25.

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: A072131 A230051 A067455 * A319549 A319209 A212310

Adjacent sequences: A033643 A033644 A033645 * A033647 A033648 A033649

Keyword

base,nonn

Author

David W. Wilson

Status

approved