A102837 - OEIS

A102837

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

1, 4, 9, 10, 18, 40, 46, 52, 61, 63, 90, 94, 100, 108, 112, 136, 144, 184, 196, 400, 406, 414, 432, 448, 478, 502, 522, 562, 601, 603, 619, 625, 657, 667, 900, 904, 916, 928, 952, 972, 1000, 1008, 1012, 1036, 1044, 1084, 1096, 1152, 1168, 1240, 1260, 1348

(list; graph; refs; listen; history; text; internal format)

OFFSET

1,2

LINKS

Harvey P. Dale, Table of n, a(n) for n = 1..1000

EXAMPLE

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

MATHEMATICA

Select[Range[1400], IntegerQ[Sqrt[FromDigits[RotateLeft[ IntegerDigits[ #]]]]]&] (* Harvey P. Dale, May 05 2017 *)

CROSSREFS

Sequence in context: A312832 A236652 A236748 * A356417 A004631 A316113

Adjacent sequences: A102834 A102835 A102836 * A102838 A102839 A102840

KEYWORD

base,easy,nonn

AUTHOR

Jason Earls, Mar 16 2005

STATUS

approved