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%I #7 Sep 30 2025 22:13:02
%S 0,0,0,0,0,1,12,99,696,4476,27249,159940,915113,5139576,28466304,
%T 155985402,847589346,4574772507,24557645009,131237632524,698734393764,
%U 3708569673741,19631253013419,103682149851363,546526154952085,2875951591143054,15111570987672656
%N Number of fixed polyhexes of area n with holes.
%F a(n) = A001207(n) - A121220(n).
%Y Cf. A001207, A038144, A121220, A389190.
%K nonn
%O 1,7
%A _John Mason_, Sep 25 2025