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%I #9 Mar 25 2021 13:14:39
%S 0,2,0,10,208,64386,4294577648,18446744043646148330,
%T 340282366920938463315800654962347229920,
%U 115792089237316195423570985008687907850207443363352117868951295327319990568642
%N a(n) = number of n-variable nondegenerate self-dual truth-tables.
%C A truth table is self-dual if the last column (the values of the function) is unchanged if it is reversed and negated.
%H <a href="/index/Bo#Boolean">Index entries for sequences related to Boolean functions</a>
%F a(0)=0; for n>0, a(n) = A000371(n-1)-a(n-1).
%Y Cf. A000371, A342286.
%K nonn
%O 0,2
%A _N. J. A. Sloane_, Mar 25 2021, based on an email from Nollaig MacKenzie, Mar 23 2021