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.

A164124 First differences of A016041.

Original entry on oeis.org

0, 2, 2, 10, 14, 42, 34, 20, 130, 56, 130, 750, 260, 118, 48, 168, 44, 48, 3010, 224, 76, 368, 312, 112, 230, 616, 780, 152, 160, 272, 9186, 720, 192, 1144, 176, 192, 1356, 1384, 128, 192, 720, 448, 1718, 192, 1240, 624, 320, 96, 588, 864, 720, 792, 544
Offset: 1

Views

Author

Keywords

Comments

Differences between successive primes that are palindromic in base 2.
3, 5, 7, 17, 31, 73, 107, 127, 257, 313, 443, 1193, 1453, 1571, 1619, 1787, 1831, 1879, ...

Crossrefs

Programs

  • Mathematica
    f[n_]:=FromDigits[RealDigits[n,2][[1]]]==FromDigits[Reverse[RealDigits[n,2][[1]]]]; a=3;lst={};Do[p=Prime[n];If[f[p],AppendTo[lst,p-a];a=p],{n,2,8!,1}];lst
    Join[{0},Differences[Select[Prime[Range[5000]],IntegerDigits[#,2]== Reverse[ IntegerDigits[ #,2]]&]]] (* Harvey P. Dale, Aug 17 2024 *)

Extensions

Definition corrected by Charles R Greathouse IV, Oct 08 2009