login
The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A090807 First prime in the earliest chain of n consecutive primes with gaps 2^1, 2^2,...,2^(n-1). 1

%I

%S 3,5,1997,2237,6824897,1356705137,3637803390827

%N First prime in the earliest chain of n consecutive primes with gaps 2^1, 2^2,...,2^(n-1).

%e The earliest chain of 4 consecutive primes separated by gaps 2^1, 2^2, 2^3 is: 1997, 1999, 2003, 2011. Hence a(4) = 1997.

%Y Cf. A079014.

%K nonn

%O 2,1

%A _Joseph L. Pe_, Feb 12 2004

%E a(7)-a(8) from _Donovan Johnson_, Mar 23 2013

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

License Agreements, Terms of Use, Privacy Policy. .

Last modified October 25 09:51 EDT 2021. Contains 348239 sequences. (Running on oeis4.)