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.

A134244 Indices k such that k divides A007468(k).

Original entry on oeis.org

1, 2, 4, 6, 8, 10, 38, 47, 86, 108, 122, 322, 345, 446, 556, 665, 756, 1122, 1476, 4838, 6274, 10556, 12383, 38774, 42776, 46239, 210215, 232276, 517144, 1125321, 2561652
Offset: 1

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Author

Enoch Haga, Oct 15 2007, Oct 16 2007

Keywords

Crossrefs

Programs

  • PARI
    { p=2 ; i=1 ; for(j=1,13000, psum=p ; for(k=2,j, p=nextprime(p+1) ; psum += p ; ) ; if(psum % j ==0, print(j) ; ) ; p=nextprime(p+1) ; ) ; } \\ R. J. Mathar, Jan 24 2008

Extensions

Better definition from R. J. Mathar, Nov 16 2007
Entries checked by R. J. Mathar, Jan 24 2008
a(24)-a(26) from Max Alekseyev, Jul 29 2011
a(27)-a(28) from Chai Wah Wu, Jan 14 2020
a(29) from Chai Wah Wu, Jan 16 2020
a(30)-a(31) from Giovanni Resta, Jan 24 2020