%I #5 Apr 30 2013 15:58:08
%S 2,2,8,64,832,15104,352256,10037248,337936384,13126565888,
%T 577818263552,28425821618176,1545553369366528,92034646352592896,
%U 5956917762776367104,416397789920380321792,31262503202358260924416
%N Number of non-degenerate fanout-free Boolean functions of n variables.
%C Apart from initial term and offset, same as A005640, which is the main entry for this sequence.
%D J. P. Hayes, Enumeration of fanout-free Boolean functions, J. ACM, 23 (1976), 700-709.
%Y Cf. A005640, A005736, A005737.
%K nonn
%O 0,1
%A _N. J. A. Sloane_, Apr 30 2013