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.

A064967 100000000n+1, 100000000n+3, 100000000n+7, 100000000n+9 are all primes.

Original entry on oeis.org

27346, 62101, 149650, 168130, 207670, 230830, 242443, 249439, 257227, 278521, 300028, 329389, 342700, 401980, 436315, 452281, 456985, 523972, 528946, 530671, 535918, 612595, 642832, 657151, 732799, 733783, 746848, 758857, 857662, 866608
Offset: 1

Views

Author

Robert G. Wilson v, Oct 29 2001

Keywords

Crossrefs

Cf. A007811 and A064687.

Programs

  • Mathematica
    Select[Range[10^6], PrimeQ[10^8# + 1] && PrimeQ[10^8# + 3] && PrimeQ[10^8# + 7] && PrimeQ[10^8# + 9] &]
    Select[Range[900000],AllTrue[100000000#+{1,3,7,9},PrimeQ]&] (* The program uses the AllTrue function from Mathematica version 10 *) (* Harvey P. Dale, May 14 2016 *)