OFFSET
0,1
LINKS
FORMULA
a(0)=11, a(n) = 10*a(n-1) + 31.
a(n) = (130*10^n - 31)/9 (see PARI's code by Charles R Greathouse IV).
From Elmo R. Oliveira, Feb 18 2025: (Start)
G.f.: (11 + 20*x)/((1 - x)*(1 - 10*x)).
E.g.f.: exp(x)*(130*exp(9*x) - 31)/9.
a(n) = 11*a(n-1) - 10*a(n-2). (End)
MATHEMATICA
a[0]=11; a[n_]:=a[n-1]*10+31; Table[a[n], {n, 0, 44}]
PROG
(PARI) a(n)=(130*10^n-31)/9 \\ Charles R Greathouse IV, Jan 23 2012
CROSSREFS
KEYWORD
nonn,easy,base,less
AUTHOR
José María Grau Ribas, Jan 22 2012
STATUS
approved