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!)
A133487 The first term is 256; each subsequent term in the series is computed by translating the previous term to binary, then reinterpreting the binary expansion as a product of metaprimes. Metaprimes follow the form p^(2^n) where p is a prime number and n is a nonnegative integer. See the link for more detailed explanation. 0
256, 16, 7, 24, 35, 54, 756, 612612, 2291867200, 5127061294109100000 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
The next term is larger than 2^64.
LINKS
Will Nicholes, Metaprime binary series..
FORMULA
a(0)=256, a(n) = A052330(a(n-1)).
EXAMPLE
35 decimal is 100011 binary; 100011 is reinterpreted as (9^1)(7^0)(5^0)(4^0)(3^1)(2^1) = 54.
CROSSREFS
Cf. A079708.
Sequence in context: A351248 A160514 A203813 * A342039 A188830 A103949
KEYWORD
nonn,more
AUTHOR
Will Nicholes, Nov 30 2007
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 March 29 08:00 EDT 2024. Contains 371265 sequences. (Running on oeis4.)