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%I #12 Jan 03 2025 03:18:58
%S 0,1,4,26,236,2763,39692,676372,13342464
%N Half volumes of concertina hypercubes: a(n) = A300697(n)/2.
%Y Cf. A300697.
%K nonn,more
%O 0,3
%A _Tilman Piesk_, Mar 11 2018
%E a(7)-a(8) from _Ludovic Schwob_, Jan 03 2025