OFFSET

1,2

COMMENTS

For n >= 12, a(n) = a(n-5) + a(n-7).

LINKS

R. J. Mathar, Paving rectangular regions with rectangular tiles,...., arXiv:1311.6135 [math.CO], Table 5.

Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,1,0,1).

FORMULA

G.f.: x*(1-2*x^10-6*x^9-11*x^8-6*x^7-7*x^6+x^5+2*x^4+3*x^3+6*x^2+9*x)/(1-x^7-x^5) [From Maksym Voznyy (voznyy(AT)mail.ru), Aug 11 2009]

CROSSREFS

KEYWORD

easy,nonn

AUTHOR

Dean Hickerson, Mar 11 2002

EXTENSIONS

G.f. proposed by Maksym Voznyy checked and corrected by R. J. Mathar, Sep 16 2009.

STATUS

approved