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%I #15 Nov 10 2023 12:26:56
%S 0,1,1,2,4,8,20,44,124,300,920,2420,7940,22460,78040,235260,859580,
%T 2741660,10477880,35152820,139931620,491459820,2030707640,7436765660,
%U 31805257340,121046445260,534514790680,2108118579060,9591325648580
%N Numerators of continued fraction for alternating factorial.
%F a(0)=0; a(1)=1; a(n) = a(n-1) + (n/2)*a(n-2).
%F a(2n) = A002793(n); a(2n-1) = A002793(n) - n * A002793(n-1). - _Max Alekseyev_, Jul 07 2010
%Y Cf. A002793, A056922 (denominators).
%K nonn,frac
%O 0,4
%A _Aleksandar Petojevic_, Sep 05 2000
%E More terms from _James A. Sellers_, Sep 07 2000
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