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A067475 Smallest n-digit square starting with 5. 3
529, 5041, 50176, 501264, 5004169, 50013184, 500014321, 5000045521, 50000090449, 500000309449, 5000000100624, 50000002660624, 500000010062400, 5000000124641041, 50000000111812804, 500000001150395524 (list; graph; refs; listen; history; text; internal format)
OFFSET

3,1

LINKS

Robert Israel, Table of n, a(n) for n = 3..998

FORMULA

a(n) = ceiling(sqrt(5*10^(n-1)))^2, n>2. - Rick L. Shepherd, Feb 18 2002

MAPLE

seq(ceil(sqrt(5*10^(d-1)))^2, d=3..30); # Robert Israel, Sep 30 2016

MATHEMATICA

Table[Ceiling[Sqrt[5*10^n]]^2, {n, 2, 20}] (* Harvey P. Dale, Aug 23 2014 *)

PROG

(PARI) for(n=3, 22, a=ceil(sqrt(5*10^(n-1)))^2; print(a))

CROSSREFS

Cf. A035072 (roots), A045788, A067479 (2..9).

Sequence in context: A274932 A082409 A066742 * A052074 A112079 A156573

Adjacent sequences:  A067472 A067473 A067474 * A067476 A067477 A067478

KEYWORD

base,easy,nonn

AUTHOR

Amarnath Murthy, Feb 09 2002

EXTENSIONS

More terms from Rick L. Shepherd, Feb 18 2002

STATUS

approved

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Last modified September 16 15:01 EDT 2021. Contains 347472 sequences. (Running on oeis4.)