A231869 Elements of the planar rooted trees sub-operad PRT of TN generated by 01.

1, 12, 122, 123, 1222, 1223, 1232, 1233, 1234, 12222, 12223, 12232, 12233, 12234, 12322, 12323, 12332, 12333, 12334, 12342, 12343, 12344, 12345

Offset

1,2

Comments

Since nonzero terms in the OEIS may not begin with 0, 1 has been added to all the digits.

Links

Table of n, a(n) for n=1..23.

S. Giraudo, Combinatorial operads from monoids, arXiv preprint arXiv:1306.6938 [math.CO], 2013-2015.

Crossrefs

Sequence in context: A037487 A332603 A358615 * A038490 A329360 A037551

Adjacent sequences: A231866 A231867 A231868 * A231870 A231871 A231872

Keyword

nonn,more

Author

N. J. A. Sloane, Nov 14 2013

Status

approved