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

Author

David W. Wilson

Keywords

• base
• nonn

Examples

			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.