login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A050775 Iterated procedure 'composite k added to sum of its prime factors reaches a prime' yields 8 skipped primes. 0
16, 36, 74, 80, 81, 86, 115, 119, 121, 123, 141, 215, 266, 276, 360, 451, 465, 572, 779, 868, 1548, 1624, 1674, 1763, 1917, 1925, 2196, 2331, 2368, 2730, 3108, 3306, 3430, 3816, 4452, 4575, 5110, 5312, 5412, 6273, 6324, 6820, 7632, 8772, 9027, 9204, 9435 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
EXAMPLE
a(6)=86 + (2+43) = ending prime 131. Between 86 and 131 one finds 8 primes 89, 97, 101, 103, 107, 109, 113 and 127.
CROSSREFS
Sequence in context: A031360 A295016 A125240 * A022040 A074985 A229134
KEYWORD
nonn
AUTHOR
Patrick De Geest, Sep 15 1999
EXTENSIONS
Offset corrected by Sean A. Irvine, Aug 18 2021
STATUS
approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 24 22:37 EDT 2024. Contains 374585 sequences. (Running on oeis4.)