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Search: id:A069701
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| A069701 |
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Squares with internal digits also forming a square > 0. |
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+0
1
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| 144, 196, 441, 841, 1369, 3364, 4096, 5041, 8649, 10816, 11449, 20164, 38416, 61009, 64009, 77841, 117649, 132496, 170569, 231361, 249001, 288369, 310249, 405769, 564001, 619369, 1004004, 1077444, 1129969, 2163841, 2256004, 3013696
(list; graph; listen)
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OFFSET
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0,1
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EXAMPLE
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3364 is a member as 3364 and 36 both are squares.
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MATHEMATICA
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nzsqr[n_] := n>0&&IntegerQ[Sqrt[n]]; Select[Range[10, 2000], nzsqr[FromDigits[Drop[Drop[IntegerDigits[ #^2], 1], -1]]]&]^2
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CROSSREFS
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Sequence in context: A165076 A165078 A135780 this_sequence A124144 A061040 A159456
Adjacent sequences: A069698 A069699 A069700 this_sequence A069702 A069703 A069704
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KEYWORD
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base,nonn
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AUTHOR
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Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 06 2002
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EXTENSIONS
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Edited by Dean Hickerson (dean.hickerson(AT)yahoo.com), Apr 09 2002
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