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!)
A088589 An improved natural sequence based on two base scales Pi and e and the prime sequence. 0

%I #6 Mar 30 2012 17:34:13

%S 1,3,8,17,126,378,7604,38022,2075945,14531618,2156683401,23723517421,

%T 9570750010878,124419750141419,136442823568464604,2319528000663898268,

%U 6914415519745978746410,131373894875173596181802

%N An improved natural sequence based on two base scales Pi and e and the prime sequence.

%F a(n) = f_Pi[n]*f_E[n]

%t Phi=Pi Digits=40 (* Pi based sequence*) a=Table[If[m==0, Phi, Phi*Product[Prime[n], {n, 1, m}]], {m, 0, Digits}] (* one inserted to give one as first element*) a0=Insert[a, 1, 1] (* e based sequence*) b=Table[Exp[Sum[n, {n, 0, m}]], {m, 0, Digits}] c=Table[Floor[a0[[Floor[(n+1)/2]]]*b[[Floor[n/2]]]], {n, 2, Digits+1}]

%K nonn,uned

%O 0,2

%A _Roger L. Bagula_, Nov 20 2003

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 20 09:51 EDT 2024. Contains 371802 sequences. (Running on oeis4.)