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

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.