A231872 Elements of the Motzkin words sub-operad Motz of TN generated by 00 and 010.

1, 11, 111, 121, 1111, 1121, 1211, 1221, 11111, 11121, 11211, 11221, 12111, 12121, 12211, 12221, 12321, 111111, 111121, 111211, 111221, 112111, 112121, 112211, 112221, 112321, 121111, 121121, 121211, 121221, 122111, 122121, 122211, 122221, 122321, 123211, 123221, 123321

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..38.

S. Giraudo, Combinatorial operads from monoids, arXiv preprint arXiv:1306.6938, 2013

Crossrefs

Sequence in context: A273977 A358441 A135464 * A308365 A083278 A039987

Adjacent sequences: A231869 A231870 A231871 * A231873 A231874 A231875

Keyword

nonn

Author

N. J. A. Sloane, Nov 14 2013

Status

approved