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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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A118104 Primes in A118103.

Original entry on oeis.org

2, 47, 67, 173, 229, 257, 877, 1009, 1031, 1097, 1163, 1669, 1721, 1747, 1877, 2731, 2791, 2851, 2971, 3001, 3061, 3121, 3181, 3271, 3301, 3331, 3361, 3391, 3407, 3583, 3631, 3727, 3823, 3919, 3967, 4079, 4111, 4127, 4159, 4597, 4733, 4801, 4903, 4937
Offset: 1

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Author

Franklin T. Adams-Watters, Apr 12 2006

Keywords

Comments

Primes are relatively scarce in A118103 because there is often a common factor between a(n) and the difference a(n)-a(n-1); if this same difference applies to the next term, it will also be composite.

Links

Crossrefs

Cf. A118103, A118105.
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