A226297 - OEIS

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A226297

Number of primitive permutations with n buds and 4 red or blue elements.

1, 12, 159, 2388, 40221, 751032 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`0,2`
	LINKS	`Table of n, a(n) for n=0..5.` `Adrian Ocneanu, On the inner structure of a permutation: bicolored partitions and Eulerians, trees and primitives, arXiv preprint arXiv:1304.1263 [math.CO], 2013.`
	CROSSREFS	`Sequence in context: A269642 A269411 A347748 * A286721 A349154 A112719` `Adjacent sequences: A226294 A226295 A226296 * A226298 A226299 A226300`
	KEYWORD	`nonn,more`
	AUTHOR	`N. J. A. Sloane, Jun 05 2013`
	STATUS	`approved`

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Last modified May 18 09:54 EDT 2024. Contains 372620 sequences. (Running on oeis4.)