OFFSET
0,3
LINKS
D. Callan, T. Mansour, Enumeration of small Wilf Classes avoiding 1342 and two other 4-letter patterns, arXiv:1708.00832 (2017). Table 1 No 103.
MAPLE
C := (1-sqrt(1-4*x))/2/x ;
p := 1-9*x+35*x^2-77*x^3+107*x^4-97*x^5+55*x^6-17*x^7+x^8 ;
q := (1-x)^5*(1-4*x+5*x^2-3*x^3) ;
taylor(p/q*C, x=0, 40) ;
gfun[seriestolist](%) ;
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
R. J. Mathar, Nov 07 2017
STATUS
approved