Included in accordance with OEIS policy of including incorrect sequences to serve as pointers to the correct versions.
Table of n, a(n) for n=2..10.
Williamson, S. G. The combinatorial analysis of patterns and the principle of inclusion-exclusion. Discrete Math. 1 (1972), no. 4, 357--388. MR0299493 (45 #8541)
Sequence in context: A273031 A001509 A295925 * A003031 A144849 A212490
Adjacent sequences: A210766 A210767 A210768 * A210770 A210771 A210772