OFFSET
0,2
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..1000
Index entries for linear recurrences with constant coefficients, signature (9,-8,7,-6,5,-4,3,-2,1)
FORMULA
G.f.: 1/(1 + Sum_{j=1..9} (10-j)*(-x)^j).
MAPLE
a:= proc(n) option remember; `if`(n<0, 0, `if`(n=0, 1,
-add((-1)^j*(10-j)*a(n-j), j=1..9)))
end:
seq(a(n), n=0..25);
MATHEMATICA
LinearRecurrence[{9, -8, 7, -6, 5, -4, 3, -2, 1}, {1, 9, 73, 592, 4801, 38935, 315754, 2560693, 20766637}, 30] (* Harvey P. Dale, Apr 03 2019 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Alois P. Heinz, Oct 26 2016
STATUS
approved