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 A067472 Smallest n-digit square starting with 2. 3
 25, 225, 2025, 20164, 200704, 2002225, 20007729, 200024449, 2000057284, 20000182084, 200000361796, 2000001237796, 20000000402496, 200000010642496, 2000000040249600, 20000000215721449, 200000000447251216 (list; graph; refs; listen; history; text; internal format)
 OFFSET 2,1 LINKS Table of n, a(n) for n=2..18. FORMULA a(n) = ceiling(sqrt(2*10^(n-1)))^2, n>1. - Rick L. Shepherd, Feb 14 2002 MATHEMATICA Table[Ceiling[Sqrt[2*10^(n-1)]]^2, {n, 2, 30}] (* Harvey P. Dale, Apr 18 2021 *) PROG (PARI) for(n=2, 25, a=ceil(sqrt(2*10^(n-1)))^2; print(a)) CROSSREFS Cf. A035069 (roots), A045785, A067479 (2..9). Sequence in context: A288876 A065779 A095241 * A058426 A189275 A048384 Adjacent sequences: A067469 A067470 A067471 * A067473 A067474 A067475 KEYWORD base,easy,nonn AUTHOR Amarnath Murthy, Feb 09 2002 EXTENSIONS More terms from Rick L. Shepherd, Feb 14 2002 STATUS approved

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Last modified September 27 07:09 EDT 2023. Contains 365674 sequences. (Running on oeis4.)