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A169601
a(n) = (10^n-1)^2 + 2.
0
2, 83, 9803, 998003, 99980003, 9999800003, 999998000003, 99999980000003, 9999999800000003, 999999998000000003, 99999999980000000003, 9999999999800000000003, 999999999998000000000003
OFFSET
0,1
FORMULA
G.f.: -(2810*x^2-139*x+2)/((x-1)*(100*x-1)*(10*x-1)).
MATHEMATICA
(10^Range[0, 20]-1)^2+2 (* Harvey P. Dale, Jan 08 2019 *)
PROG
(PARI) for(n=0, 20, print1((10^n-1)^2+2", "))
CROSSREFS
Sequence in context: A232770 A317724 A099373 * A367900 A205643 A215263
KEYWORD
nonn,easy
AUTHOR
Jason Earls, Dec 03 2009
STATUS
approved