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A102837 Numbers with property that can bring the first digit to the back of the number to get a square (zeros are dropped). 1

%I #6 Dec 15 2017 17:36:47

%S 1,4,9,10,18,40,46,52,61,63,90,94,100,108,112,136,144,184,196,400,406,

%T 414,432,448,478,502,522,562,601,603,619,625,657,667,900,904,916,928,

%U 952,972,1000,1008,1012,1036,1044,1084,1096,1152,1168,1240,1260,1348

%N Numbers with property that can bring the first digit to the back of the number to get a square (zeros are dropped).

%H Harvey P. Dale, <a href="/A102837/b102837.txt">Table of n, a(n) for n = 1..1000</a>

%e 6193 is in the sequence because 1936 = 44^2.

%t Select[Range[1400],IntegerQ[Sqrt[FromDigits[RotateLeft[ IntegerDigits[ #]]]]]&] (* _Harvey P. Dale_, May 05 2017 *)

%K base,easy,nonn

%O 1,2

%A _Jason Earls_, Mar 16 2005

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Last modified April 19 12:14 EDT 2024. Contains 371792 sequences. (Running on oeis4.)