OFFSET
0,2
LINKS
Vincenzo Librandi, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (0,0,0,0,0,0,0,0,1).
FORMULA
a(n) = a(n-9) for n > 8. G.f.: (1 + x + x^2 + x^3 + x^4)^2/(1 - x^9). - Chai Wah Wu, Jun 04 2016
MAPLE
A134011:=n->[1, 2, 3, 4, 5, 4, 3, 2, 1][(n mod 9)+1]: seq(A134011(n), n=0..100); # Wesley Ivan Hurt, Jun 11 2016
MATHEMATICA
PadRight[{}, 81, {1, 2, 3, 4, 5, 4, 3, 2, 1}] (* Harvey P. Dale, Oct 31 2011 *)
PROG
(Magma) &cat [[1, 2, 3, 4, 5, 4, 3, 2, 1]: n in [0..8]]; // Wesley Ivan Hurt, Jun 11 2016
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Paul Curtz, Jan 10 2008
STATUS
approved