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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.

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A091418 Integers n which are not the sum or difference of 2 integers A and B where A is less than or equal to n such that AB+1 and AB-1are both primes. In other words, the product A*B cannot be the middle integer of a twin prime pair.

Original entry on oeis.org

10, 15, 20, 30, 40, 60, 75, 100, 120, 250, 315, 390, 540, 630
Offset: 1

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Author

William F. Sindelar (w_sindelar(AT)juno.com), Jan 05 2004

Keywords

Comments

Sequence may be finite. Next term after 630 if it exists must be greater than 867750.
The terms in this sequence are those which are common to A090695 and A091417.

Examples

			See A090695 and A091417 for examples.

Crossrefs

Cf. A090695, A091417, A091182, A091183.
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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