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.

A121039 Multiples of 19 containing a 19 in their decimal representation.

Original entry on oeis.org

19, 190, 1197, 1900, 1919, 1938, 1957, 1976, 1995, 3192, 3819, 4199, 5719, 6194, 7619, 9196, 9519, 11191, 11419, 11913, 11932, 11951, 11970, 11989, 12198, 13319, 14193, 15219, 17119, 17195, 19000, 19019, 19038, 19057, 19076, 19095, 19114
Offset: 1

Views

Author

Reinhard Zumkeller, Jul 21 2006

Keywords

Crossrefs

Programs

  • Mathematica
    Select[19*Range[1500],MemberQ[Partition[IntegerDigits[#],2,1],{1,9}]&] (* Harvey P. Dale, Jun 08 2014 *)
  • PARI
    is(n)=if(n%19, return(0)); while(n>18, if(n%100==19, return(1)); n\=10); 0 \\ Charles R Greathouse IV, Feb 12 2017

Formula

a(n) ~ 19n. - Charles R Greathouse IV, Feb 12 2017

Extensions

Corrected by T. D. Noe, Oct 25 2006