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%I M3607 #24 Aug 26 2016 12:33:33
%S 4,24,304,5440,125824,3566080,119614464,4633387008,203524112384,
%T 9995546722304,542730361241600,32281981804347392,2087454641985945600,
%U 145797871819529650176,10938609224992417644544,877346430770422497673216
%N Number of non-degenerate fanout-free Boolean functions of n variables having AND rank 2.
%D N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
%H J. P. Hayes, <a href="http://dx.doi.org/10.1145/321978.321988">Enumeration of fanout-free Boolean functions</a>, J. ACM, 23 (1976), 700-709.
%H <a href="/index/Bo#Boolean">Index entries for sequences related to Boolean functions</a>
%F Hayes (1976, Theorem 3) gives a recurrence.
%Y A column of A225171.
%K nonn
%O 2,1
%A _N. J. A. Sloane_.
%E More terms from _Sean A. Irvine_, Aug 26 2016
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