OFFSET
0,2
COMMENTS
I did not study this paper carefully, but it appears that this g.f. might be wrong and the correct version should be that in A089932.
LINKS
A. Burstein and T. Mansour, Words restricted by 3-letter generalized multipermutation patterns, arXiv:math/0112281 [math.CO], 2001; Annals. Combin., 7 (2003), 1-14.
Index entries for linear recurrences with constant coefficients, signature (8,-22,23,-6).
MATHEMATICA
LinearRecurrence[{8, -22, 23, -6}, {1, 4, 16, 60}, 27] (* Jean-François Alcover, Jan 07 2019 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jan 18 2004
STATUS
approved