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.

A121036 Multiples of 16 containing a 16 in their decimal representation.

Original entry on oeis.org

16, 160, 416, 816, 1168, 1216, 1600, 1616, 1632, 1648, 1664, 1680, 1696, 2016, 2160, 2416, 2816, 3168, 3216, 3616, 4016, 4160, 4416, 4816, 5168, 5216, 5616, 6016, 6160, 6416, 6816, 7168, 7216, 7616, 8016, 8160, 8416, 8816, 9168, 9216, 9616, 10016
Offset: 1

Views

Author

Reinhard Zumkeller, Jul 21 2006

Keywords

Crossrefs

Programs

  • Mathematica
    seqMemberQ[lst_,seq_]:=MemberQ[Partition[lst,Length[seq],1],seq]
    m16Q[n_]:=seqMemberQ[IntegerDigits[n],{1,6}]
    Select[16Range[1000],m16Q]  (* Harvey P. Dale, Feb 26 2011 *)
    Select[16Range[1000],SequenceCount[IntegerDigits[#],{1,6}]>0&] (* The program uses the SequenceCount function from Mathematica version 10 *) (* Harvey P. Dale, Apr 12 2016 *)
  • PARI
    is(n)=if(n%16,return(0));n=eval(Vec(Str(n)));for(i=2,#n,if(n[i]==6&&n[i-1]==1,return(1)));0

Formula

a(n) ~ 16n. - Charles R Greathouse IV, Jul 16 2011

Extensions

Corrected by Harvey P. Dale, Feb 26 2011