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.

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A301991 Terms of A301857 where both A301857(n) and its counterpart are composite.

Original entry on oeis.org

185, 323, 403, 527, 551, 779, 959, 899, 1139, 1147, 1517, 1649, 1643, 1751, 1763, 1943, 2071, 2363, 2509, 2561, 2603, 2669, 2827, 2747, 2831, 2993, 3635, 3139, 3649, 3791, 3737, 3893, 4031, 4087, 4453, 4553, 5615, 4883, 4891, 5663, 5069
Offset: 1

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Author

Torlach Rush, Mar 30 2018

Keywords

Comments

A301857 selects the least solutions to A023900 where A023900(j) + A023900(k) = 0 and the pair j,k are coprime.

Examples

			185 is a term because A301857(11) = 185 and both 185 and 273 are composite.

Crossrefs

Subsequence of A301857; cf. A023900.
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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