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.

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A242559 Zeroless numbers n such that n^3 contains a 0.

Original entry on oeis.org

16, 22, 34, 37, 42, 43, 47, 48, 52, 59, 63, 67, 69, 73, 74, 79, 84, 86, 87, 89, 93, 94, 99, 112, 115, 116, 117, 118, 123, 124, 126, 127, 128, 131, 134, 135, 138, 141, 143, 145, 149, 152, 159, 163, 164, 169, 171, 172, 174, 182, 184, 187, 192, 193, 194, 199, 214, 216
Offset: 1

Views

Author

Derek Orr, May 17 2014

Keywords

Examples

			16 does not contain a 0 and 16^3 = 4096 contains a 0. Thus, 16 is a member of this sequence.
		

Crossrefs

Subsequence of A242214.
Cf. A052382 (zeroless numbers), A134843.

Programs

  • PARI
    is(n)=Set(digits(n))[1] && Set(digits(n^3))[1]==0 \\ Charles R Greathouse IV, Jul 10 2015
  • Python
    {print(n) for n in range(10**3) if str(n).count("0")==0 and str(n**3).count("0")>0}
    
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