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!)
A101995 4n-1 such that 4n-1, 8n-1, 16n-1, 32n-1 and 64n-1 are primes. 5

%I #1 Feb 20 2005 03:00:00

%S 179,53639,63419,126839,127139,254279,296099,340919,607319,810539,

%T 1069199,1122659,1598699,1621619,1820999,1866239,1912679,1920959,

%U 2045339,2138399,2157899,2245319,2278079,2357219,2667779,2865839

%N 4n-1 such that 4n-1, 8n-1, 16n-1, 32n-1 and 64n-1 are primes.

%e 4*45-1=179, 8*45-1=359, 16*45-1=719, 32*45-1=1439 and 64*45-1=2879 are primes, so the first entry is 179.

%Y Cf. A002515, A101794. Cf. A101994, A101996, A101997, A101998, A101999.

%K easy,nonn

%O 1,1

%A Douglas Stones (dssto1(AT)student.monash.edu.au), Dec 23 2004

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 April 19 12:14 EDT 2024. Contains 371792 sequences. (Running on oeis4.)