OFFSET
0,6
LINKS
C. Bean, M. Tannock and H. Ulfarsson, Pattern avoiding permutations and independent sets in graphs, arXiv:1512.08155 [math.CO], 2015. See Prop. 5.20.
CROSSREFS
KEYWORD
nonn,more
AUTHOR
N. J. A. Sloane, Nov 09 2016
STATUS
approved