A069086 Treated as strings, n begins with Floor(sqrt(n)).

1, 80, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 9800, 9900, 9901, 9902, 9903, 9904, 9905, 9906, 9907, 9908, 9909, 9910, 9911, 9912, 9913, 9914, 9915, 9916, 9917, 9918, 9919, 9920, 9921, 9922, 9923, 9924

Offset

1,2

Links

Table of n, a(n) for n=1..48.

Example

9938 begins with 99 = Floor(sqrt(9938)), so 9938 is a term of the sequence.

Mathematica

r = {}; Do[m = StringPosition[ToString[n], ToString[Floor[Sqrt[n]]]]; If[m != {}, If[m[[1]][[1]] == 1, r = Append[r, n]]], {n, 1, 10^4}]; r

Crossrefs

Sequence in context: A296878 A114836 A294740 * A119482 A054983 A039545

Adjacent sequences: A069083 A069084 A069085 * A069087 A069088 A069089

Keyword

base,nonn

Author

Joseph L. Pe, Apr 05 2002

Status

approved