OFFSET
0,3
LINKS
E. Deutsch, Counting tilings with L-tiles and squares, Problem 10877, Amer. Math. Monthly, 110 (March 2003), 245-246.
Index entries for linear recurrences with constant coefficients, signature (1,5,4,0,-1).
FORMULA
G.f.: (1-x-x^2)/(1-x-5*x^2-4*x^3+x^5).
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
N. J. A. Sloane, Mar 07 2003
STATUS
approved