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A130448
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Squares whose decimal representation contains no substring which is a square.
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1
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1, 4, 9, 25, 36, 576, 676, 7056, 80656, 665856, 2027776, 2802276, 22282727076, 77770707876, 78807087076, 7888885568656, 8782782707776, 72822772707876, 555006880085056, 782280288087076, 827702888070276, 888288787822276
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| The digits in the substring do not have to be adjacemt.
Is this sequence finite and if so what is the last term?
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EXAMPLE
| 576 is in the list because none of the substrings 5, 7, 6, 57, 76 or 56 is a square number.
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CROSSREFS
| Cf. A131599.
Sequence in context: A087058 A046659 A063760 * A046451 A158142 A158143
Adjacent sequences: A130445 A130446 A130447 * A130449 A130450 A130451
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KEYWORD
| base,nonn
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AUTHOR
| Martin Raab (raab-martin(AT)gmx.de), Aug 07 2007
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EXTENSIONS
| Edited by N. J. A. Sloane (njas(AT)research.att.com), Sep 14 2007
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