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Search: id:A067477
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| A067477 |
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Smallest n-digit square starting with 7. |
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+0
3
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| 729, 7056, 70225, 700569, 7001316, 70006689, 700025764, 7000166889, 70000459776, 700001628921, 7000003645504, 70000012293201, 700000047060196, 7000000057996009, 70000000472817424, 700000000779640729
(list; graph; listen)
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OFFSET
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3,1
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FORMULA
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a(n) = ceiling(sqrt(7*10^(n-1)))^2, n>2. - Rick L. Shepherd (rshepherd2(AT)hotmail.com), Feb 18 2002
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PROGRAM
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(PARI) for(n=3, 22, a=ceil(sqrt(7*10^(n-1)))^2; print(a))
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CROSSREFS
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Cf. A035074 (roots), A045790, A067479 (2..9).
Sequence in context: A062556 A017163 A017379 this_sequence A034991 A017499 A017631
Adjacent sequences: A067474 A067475 A067476 this_sequence A067478 A067479 A067480
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KEYWORD
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base,easy,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Feb 09 2002
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EXTENSIONS
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More terms from Rick L. Shepherd (rshepherd2(AT)hotmail.com), Feb 18 2002
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