cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A225565 Numbers with repeated digits, whose squares do not contain any repeated digits.

Original entry on oeis.org

33, 44, 55, 66, 99, 113, 116, 117, 118, 133, 144, 181, 191, 199, 224, 226, 228, 232, 233, 252, 272, 282, 292, 299, 311, 322, 323, 353, 442, 445, 557, 616, 626, 661, 677, 686, 717, 733, 737, 757, 777, 778, 797, 799, 855, 884, 889, 929, 1017, 1113, 1117
Offset: 1

Views

Author

Jayanta Basu, May 10 2013

Keywords

Comments

Subsequence of A119509. There are a total of 274 such terms. a(274)=99066.

Examples

			117 is a member since it has repeated digits but 117^2=13689 contains no repeated digits.
		

Crossrefs

Cf. A119509.

Programs

  • Mathematica
    mx[n_]:=Max[DigitCount[n]]; Select[Range[1150],mx[#]>1 && mx[#^2]<=1 &]