OFFSET
1,4
LINKS
K. A. Van'kov, V. M. Zhuravlyov, Regular tilings and generating functions, Mat. Pros. Ser. 3, issue 22, 2018 (127-157) [in Russian]. See Table 1.
Index entries for linear recurrences with constant coefficients, signature (4,2,-8,2,6,-1).
FORMULA
Van'kov and Zhuravlyov give recurrences.
G.f.: -x^2*(x^2-x-1)*(x-1)^2/(1+x)/(x^5-7*x^4+5*x^3+3*x^2-5*x+1) . - R. J. Mathar, Jan 11 2019
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Jan 09 2019
STATUS
approved