reinhard.zumkeller@gmail.com July 14 2008 Logical Convolutions in the OEIS ================================ x(n) = Op2{k Op1 (n-k): 0 <= k <= n} with Op1, Op2 in {OR, AND, XOR}. +-------------+-------------+-------------+ \ Op1 ! ! ! ! \ ! OR ! AND ! XOR ! Op2 \ ! ! ! ! +---------+-------------+-------------+-------------+ ! ! ! ! ! ! OR ! A003817 ! A086099 ! A142151 ! ! ! ! ! ! +---------+-------------+-------------+-------------+ ! ! ! ! ! ! AND ! A000004 ! A000004 ! A000004 ! ! ! ! ! ! +---------+-------------+-------------+-------------+ ! ! ! ! ! ! XOR ! A142149 ! A142150 ! A001477 ! ! ! ! ! ! +---------+-------------+-------------+-------------+