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.

A110773 Primes arising in A110772.

Original entry on oeis.org

2, 23, 239, 23911, 2391113, 239111363, 23911136351, 2391113635129, 239111363512969, 23911136351296933, 2391113635129693349, 2391113635129693349159, 239111363512969334915917
Offset: 1

Views

Author

Amarnath Murthy, Aug 12 2005

Keywords

Crossrefs

Cf. A110772.

Extensions

More terms from David Wasserman, Dec 29 2008

A289994 a(1) = 1, a(2) = 2, a(n) = smallest number not occurring earlier such that the concatenation a(n-2), a(n-1) and a(n) is a prime.

Original entry on oeis.org

1, 2, 7, 11, 19, 13, 9, 21, 43, 3, 31, 49, 17, 37, 29, 41, 27, 39, 67, 33, 81, 53, 51, 23, 89, 91, 59, 47, 73, 61, 87, 99, 79, 63, 117, 113, 77, 127, 103, 93, 111, 71, 69, 101, 147, 57, 97, 133, 119, 121, 139, 131, 107, 157, 151, 123, 153, 83, 143, 169, 109, 137
Offset: 1

Views

Author

Seiichi Manyama, Sep 02 2017

Keywords

Examples

			127, 2711, 71119, 111913, ... are primes.

Links

Crossrefs

Cf. A075607, A073676, A083754, A110772.
Showing 1-2 of 2 results.

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

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