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.

A076706 Primes which are the difference between two successive prime powers of prime numbers.

Original entry on oeis.org

2, 3, 5, 17, 41, 139, 199, 271, 1217, 3617, 4001, 4241, 117017, 746153, 137542193
Offset: 1

Views

Author

Zak Seidov, Oct 26 2002

Keywords

Examples

			3 = 128 - 125 = 2^7 - 5^3; 4241 = 528529 - 524288 = 727^2 - 2^19.
		

Crossrefs

Programs

  • Mathematica
    pp = Sort[ Flatten[ Table[ Prime[n]^Prime[i], {n, 1, PrimePi[ Sqrt[10^16]]}, {i, 1, PrimePi[ Floor[ Log[ Prime[n], 10^16]]]}]]]; a = {}; Do[ If[ PrimeQ[ pp[[n + 1]] - pp[[n]]], a = Append[a, pp[[n + 1]] - pp[[n]]]], {n, 1, Length[pp] - 1}]; Union[a]

Extensions

Edited and extended by Robert G. Wilson v, Oct 31 2002