OFFSET
0,2
COMMENTS
All terms are zeroless (element of A052382).
LINKS
Seiichi Manyama, Table of n, a(n) for n = 0..500
Index entries for linear recurrences with constant coefficients, signature (111,-1110,1000).
FORMULA
a(n) = A246057(n)^2 = ((5*10^n-2)/3)^2.
a(n) = 111*a(n-1) - 1110*a(n-2) + 1000*a(n-3).
G.f.: (1+145*x+250*x^2)/((1-x)*(1-10*x)*(1-100*x)).
MATHEMATICA
LinearRecurrence[{111, -1110, 1000}, {1, 256, 27556}, 20] (* Harvey P. Dale, Dec 13 2021 *)
PROG
(PARI) {a(n) = ((5*10^n-2)/3)^2}
(PARI) N=20; x='x+O('x^N); Vec((1+145*x+250*x^2)/((1-x)*(1-10*x)*(1-100*x)))
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Seiichi Manyama, Aug 23 2019
STATUS
approved