A192078 - OEIS

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A192078

Number of run-unimodal words of length 2n.

1

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

(list; graph; refs; listen; history; text; internal format)

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

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