%N Erroneous version of A295925.
%C Included in accordance with OEIS policy of including incorrect sequences to serve as pointers to the correct versions.
%H Williamson, S. G. <a href="http://dx.doi.org/10.1016/0012-365X(72)90043-X">The combinatorial analysis of patterns and the principle of inclusion-exclusion</a>. Discrete Math. 1 (1972), no. 4, 357--388. MR0299493 (45 #8541)