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A061230
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Numbers n such that n + the reversal of n is a square.
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2
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0, 2, 8, 29, 38, 47, 56, 65, 74, 83, 92, 110, 143, 164, 198, 242, 263, 297, 341, 362, 396, 440, 461, 495, 560, 594, 693, 792, 891, 990, 10100, 10148, 10340, 10395, 10403, 10683, 10908, 10980, 11138, 11330, 11385, 11673, 11970, 12128, 12320, 12375
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,2
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COMMENTS
| Squares in A061230: k^2 for k=0, 231, 9426681, 8803095102, 56017891104, with next k > 10^11 (Douglas McNeil and Zak Seidov). - Zak Seidov, Nov 09 2010
The next square in A061230 is 4811618419542^2. - Giovanni Resta, Sep 26 2011
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EXAMPLE
| 8 is a member as 8+8= 16 =4^2. a(4)= 56 as 56 + 65 = 121 = 11^2.
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MATHEMATICA
| Select[Range[0, 15000], IntegerQ[Sqrt[#+FromDigits[Reverse[ IntegerDigits[#]]]]]&] (* From Harvey P. Dale, Apr 18 2011 *)
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CROSSREFS
| Cf. A061231.
Sequence in context: A150730 A150731 A150732 * A107025 A100477 A011367
Adjacent sequences: A061227 A061228 A061229 * A061231 A061232 A061233
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KEYWORD
| nonn,base
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AUTHOR
| Amarnath Murthy (amarnath_murthy(AT)yahoo.com), Apr 23 2001
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EXTENSIONS
| Corrected and extended by Patrick De Geest (pdg(AT)worldofnumbers.com), May 28 2001
Edited by N. J. A. Sloane, Jul 24 2009
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