OFFSET
1,2
COMMENTS
Is this a permutation of the positive integers? Daniel Suteu's b-file suggests the answer is no, since powers of 2 >= 8 seem to be missing.
In fact Daniel Suteu points out that Eu and Liu (2008) prove that no Motzkin number is a multiple of 8.
LINKS
Daniel Suteu, Table of n, a(n) for n = 1..191
Eu, Sen-Peng & Liu, Shu-Chung & Yeh, Yeong-nan, Catalan and Motzkin numbers modulo 4 and 8, EJC (2008).
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Jul 25 2019
EXTENSIONS
More terms from Daniel Suteu, Jul 25 2019
STATUS
approved