A226299 - OEIS

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A226299

Number of primitive permutations with n buds and 6 red or blue elements.

%I #9 Jul 11 2022 14:21:34

%S 1,25,540,11760,268365,6495345

%N Number of primitive permutations with n buds and 6 red or blue elements.

%H Adrian Ocneanu, <a href="http://arxiv.org/abs/1304.1263">On the inner structure of a permutation: bicolored partitions and Eulerians, trees and primitives</a>, arXiv preprint arXiv:1304.1263 [math.CO], 2013.

%K nonn,more

%O 0,2

%A _N. J. A. Sloane_, Jun 05 2013