A271491 Arises in enumeration of locally convex functions.

1, 3, 9, 16, 20, 21, 21, 21, 21, 21, 21, 21

Offset

0,2

Comments

All subsequent terms are 21.

See Coscia-DeWitt (2016) for precise definition.

Links

Table of n, a(n) for n=0..11.

Christopher Coscia, Jonathan DeWitt, Locally Convex Words and Permutations, Electronic Journal of Combinatorics. 23 (2), 2016, #P2.10.

Crossrefs

Cf. A271492, A271493.

Sequence in context: A366051 A070066 A299636 * A359618 A214644 A184529

Adjacent sequences: A271488 A271489 A271490 * A271492 A271493 A271494

Keyword

nonn

Author

N. J. A. Sloane, Apr 15 2016

Status

approved