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A035127
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Squares which when digits are rotated left once remain square.
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1
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1, 4, 9, 144, 196, 625, 11664, 14884, 46656, 96100, 1493284, 4112784, 6385729, 9253764, 139287204, 149377284, 187799616, 618268225, 634284225, 678758809, 929884036, 14938217284, 43325589904, 61076696769, 97482577284
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Those resulting in leading zeros are excluded.
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LINKS
| Eric Weisstein's World of Mathematics, Square Number
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EXAMPLE
| E.g. 2527^2 = 6385729 -> 3857296 = 1964^2.
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MATHEMATICA
| okQ[n_]:=Module[{idn=IntegerDigits[n]}, idn[[2]]!=0&&IntegerQ[Sqrt[ FromDigits[RotateLeft[idn]]]]]; Join[{1, 4, 9}, Select[Range[4, 320000]^2, okQ]] (* From Harvey P. Dale, Apr 30 2011 *)
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CROSSREFS
| Cf. A045878, A035131.
Sequence in context: A168138 A128524 A027451 * A061267 A061269 A061271
Adjacent sequences: A035124 A035125 A035126 * A035128 A035129 A035130
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KEYWORD
| nonn,base
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AUTHOR
| Patrick De Geest (pdg(AT)worldofnumbers.com), Nov 15 1998.
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