A061231 n - the reversal of n is a nonzero square.

10, 21, 32, 40, 43, 51, 54, 62, 65, 73, 76, 84, 87, 90, 95, 98, 1030, 1100, 1140, 1210, 1250, 1320, 1360, 1430, 1470, 1540, 1580, 1650, 1690, 1760, 1870, 1980, 2031, 2101, 2141, 2211, 2251, 2321, 2361, 2431, 2471, 2541, 2581, 2651, 2691, 2761, 2871, 2981

Offset: 0

Author

Amarnath Murthy, Apr 23 2001

Keywords

• nonn
• base

Examples

			a(4) = 40 as 40 - 4 = 36 = 6^2; a(9)= 65 as 65- 56 = 9 = 3^2.
		

Links

• Harvey P. Dale, Table of n, a(n) for n = 0..1000

Crossrefs

Cf. A061230.

Programs

Mathematica

nzsQ[n_]:=Module[{c=n-IntegerReverse[n]},c!=0&&IntegerQ[Sqrt[c]]]; Select[ Range[3000],nzsQ] (* The program uses the IntegerReverse function from Mathematica version 10 *) (* Harvey P. Dale, Jun 05 2016 *)

Extensions

More terms from Patrick De Geest, May 28 2001