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A239372
Words of length n over the alphabet {0,...,n-1} that avoid the pattern 1212.
0
1, 1, 4, 27, 250, 2915, 40746, 661304
OFFSET
0,3
CROSSREFS
Cf. A239295.
Sequence in context: A051863 A000699 A138423 * A239375 A239370 A239369
KEYWORD
nonn,more
AUTHOR
Chad Brewbaker, Mar 17 2014
STATUS
approved