A192078 Number of run-unimodal words of length 2n.

1, 2, 4, 8, 12, 18, 38

Offset

1,2

Links

Table of n, a(n) for n=1..7.

J. L. Schulman, The quantifier semigroup for bipartite graphs, Electronic Journal of Combinatorics, 18 (2011), #P123.

Crossrefs

Cf. A192079.

Sequence in context: A134181 A171645 A125606 * A136184 A011908 A117455

Adjacent sequences: A192075 A192076 A192077 * A192079 A192080 A192081

Keyword

nonn,more

Author

N. J. A. Sloane, Jun 23 2011

Status

approved