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A067477 Smallest n-digit square starting with 7. 2
729, 7056, 70225, 700569, 7001316, 70006689, 700025764, 7000166889, 70000459776, 700001628921, 7000003645504, 70000012293201, 700000047060196, 7000000057996009, 70000000472817424, 700000000779640729 (list; graph; refs; listen; history; text; internal format)
OFFSET
3,1
LINKS
FORMULA
a(n) = ceiling(sqrt(7*10^(n-1)))^2, n>2. - Rick L. Shepherd, Feb 18 2002
PROG
(PARI) for(n=3, 22, a=ceil(sqrt(7*10^(n-1)))^2; print(a))
CROSSREFS
Cf. A035074 (roots), A067472-A067479 (2..9).
Sequence in context: A233159 A217969 A017379 * A034991 A017499 A269057
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 July 16 10:51 EDT 2024. Contains 374345 sequences. (Running on oeis4.)