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.

Showing 1-2 of 2 results.

A101832 Duplicate of A056253.

Original entry on oeis.org

5, 11, 491, 5567, 24755
Offset: 1

Views

Author

Keywords

A082706 Numbers k such that (31*10^(k-1) - 13)/9 is a plateau prime.

Original entry on oeis.org

7, 13, 493, 5569, 24757
Offset: 1

Views

Author

Patrick De Geest, Apr 13 2003

Keywords

Comments

Prime versus probable prime status and proofs are given in the author's table.

Examples

			k=13 -> (31*10^(13-1) - 13)/9 = 3444444444443.

References

  • C. Caldwell and H. Dubner, "Journal of Recreational Mathematics", Volume 28, No. 1, 1996-97, pp. 1-9.

Links

Crossrefs

Cf. A082697-A082720, A056253.

Formula

a(n) = A056253(n) + 2.

Extensions

More terms from Herman Jamke (hermanjamke(AT)fastmail.fm), Jan 02 2008
Edited by Ray Chandler, Nov 05 2014
Showing 1-2 of 2 results.

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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