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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

Twice A136279.
3

%I #3 Aug 08 2015 23:48:52

%S 0,0,2,24,86,326,16848,1165538,80584148

%N Twice A136279.

%C Another version of A136279 (appropriate since each 2-cycle has two members).

%K nonn

%O 1,3

%A _Don Knuth_, Mar 26 2008