OFFSET
1,1
FORMULA
a(n) = ceiling(sqrt(4*10^(n-1)))^2. - Rick L. Shepherd, Feb 18 2002
MATHEMATICA
nS[n_] := Module[{i = Floor[Sqrt[n]}, If[i^2==n, i^2, (i + 1)^2]]; Table[nS[4 10^i], {i, 0, 25}]
PROG
(PARI) for(n=1, 20, a=ceil(sqrt(4*10^(n-1)))^2; print(a))
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Amarnath Murthy, Feb 09 2002
EXTENSIONS
More terms from Rick L. Shepherd, Feb 18 2002
STATUS
approved