A033643 Base 6 digital convolution sequence.
1, 1, 2, 6, 24, 120, 24, 144, 312, 1080, 4632, 24240, 9264, 57744, 134016, 517536, 2338176, 12725952, 7014528, 45192384, 111428352, 469862208, 2213733888, 12478256064, 8854935552, 58767959808, 152955661824, 693938824704
Offset: 0
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.