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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A087324 Numbers n such that n and its 9's complement both have the same prime signature.

Original entry on oeis.org

2, 7, 14, 22, 34, 65, 77, 85, 93, 97, 102, 105, 106, 114, 133, 134, 138, 161, 165, 205, 206, 214, 218, 221, 222, 234, 253, 254, 258, 262, 265, 275, 278, 301, 302, 305, 306, 314, 345, 354, 357, 365, 377, 413, 414, 437, 438, 445, 446, 454, 465, 466, 473, 475
Offset: 1

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Author

Amarnath Murthy, Sep 04 2003

Keywords

Comments

Conjecture: (1) Sequence is infinite. (2) For every prime signature there corresponds a term in this sequence.

Examples

			34 is a member as 34= 2*17 and its 9's complement (99-34) = 65 = 13*5 both have the prime signature p*q.

Crossrefs

Cf. A087325.

Extensions

Corrected and extended by David Wasserman, May 06 2005
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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