OFFSET
0,5
LINKS
S. Kitaev and J. Remmel, The 1-box pattern on pattern avoiding permutations, arXiv preprint arXiv:1305.6970 [math.CO], 2013. See Th. 7.
Index entries for linear recurrences with constant coefficients, signature (3,0,-5,0,3,1).
MATHEMATICA
Join[{0, 0, 0}, LinearRecurrence[{3, 0, -5, 0, 3, 1}, {0, 2, 6, 17, 42, 97}, 36]] (* Jean-François Alcover, Feb 12 2019 *)
CoefficientList[Series[x^4(2-x^2+x^3+x^4)/(1-x-x^2)^3, {x, 0, 50}], x] (* Harvey P. Dale, Aug 09 2024 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Oct 01 2013
STATUS
approved