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!)
A110954 a(1) = 1; a(n) = nextprime(2.5*a(n-1)) for n > 1. 0

%I #2 Oct 02 2013 15:12:49

%S 1,3,11,29,73,191,479,1201,3011,7529,18839,47111,117779,294461,736159,

%T 1840429,4601099,11502779,28756957,71892397,179730997,449327503,

%U 1123318769,2808296923,7020742321,17551855831,43879639613,109699099033

%N a(1) = 1; a(n) = nextprime(2.5*a(n-1)) for n > 1.

%e a(6) = nextprime(2.5*a(5)) = nextprime(2.5*73) = nextprime(182.5) = 191.

%t <<NumberTheory`; p = 1; Print[p]; Do[p = NextPrime[p*2.5]; Print[p], {n, 2, 30}]

%K nonn

%O 1,2

%A _Ryan Propper_, Sep 25 2005

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 24 07:34 EDT 2024. Contains 371922 sequences. (Running on oeis4.)