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A087324 Numbers n such that n and its 9's complement both have the same prime signature. 1
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Conjecture: (1) Sequence is infinite. (2) For every prime signature there corresponds a term in this sequence.
LINKS
EXAMPLE
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.
Sequence in context: A114346 A369972 A325159 * A340664 A261246 A008865
KEYWORD
base,nonn
AUTHOR
Amarnath Murthy, Sep 04 2003
EXTENSIONS
Corrected and extended by David Wasserman, May 06 2005
STATUS
approved

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Last modified March 29 03:51 EDT 2024. Contains 371264 sequences. (Running on oeis4.)