A234841 Integers n such that digits in n and n^2 are in nondecreasing order.

0, 1, 2, 3, 4, 5, 6, 7, 12, 13, 15, 16, 17, 34, 35, 37, 38, 67, 116, 117, 167, 334, 335, 337, 367, 667, 1667, 3334, 3335, 3337, 3367, 3667, 6667, 16667, 33334, 33335, 33337, 33367, 33667, 36667, 66667, 166667, 333334, 333335, 333337, 333367, 333667, 336667

Offset: 1

Author

Zak Seidov, Dec 31 2013

Keywords

• base
• nonn

Links

• Zak Seidov, Table of n, a(n) for n = 1..96

Crossrefs

Intersection of A009994 and A028819.

Programs

Mathematica

Select[Range[0,500000],LessEqual@@IntegerDigits[#]&&LessEqual@@IntegerDigits[#^2]&](* Ray Chandler, Jan 02 2014 *)