OFFSET
0,2
LINKS
Index entries for linear recurrences with constant coefficients, signature (111,-1110,1000).
FORMULA
MAPLE
A332121 := n -> 2*(10^(2*n+1)-1)/9-10^n;
MATHEMATICA
Array[2 (10^(2 # + 1)-1)/9 - 10^# &, 15, 0]
PROG
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
M. F. Hasler, Feb 09 2020
STATUS
approved