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A231871 Elements of the Schroeder trees sub-operad Schr of TN generated by 00, 01, 10. 0
1, 11, 12, 21, 111, 112, 121, 122, 123, 132, 211, 212, 221, 231, 321, 1111, 1112, 1121, 1122, 1123, 1132, 1211, 1212, 1221, 1222, 1223, 1231, 1232, 1233, 1234, 1243, 1321, 1322, 1323, 1332, 1342, 1432, 2111, 2112, 2121, 2122, 2123, 2132, 2211, 2212, 2221, 2231, 2311, 2312, 2321, 2331, 2341, 2431, 3211, 3212, 3221, 3231, 3321, 3421, 4321 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Since nonzero terms in the OEIS may not begin with 0, 1 has been added to all the digits.
LINKS
S. Giraudo, Combinatorial operads from monoids, arXiv preprint arXiv:1306.6938 [math.CO], 2013-2015.
CROSSREFS
Sequence in context: A098754 A098752 A240763 * A192287 A084855 A367612
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Nov 14 2013
STATUS
approved

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Last modified February 27 04:05 EST 2024. Contains 370362 sequences. (Running on oeis4.)