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!)
A139191 Natural numbers of the form (prime(n)!-3)/3. 19

%I #6 Jun 16 2014 08:06:23

%S 1,39,1679,13305599,2075673599,118562476031999,40548366802943999,

%T 8617338912961658879999,2947253997913233984847871999999,

%U 2740946218059307605908520959999999,4587917697075448348771993193860300799999999,11150842204387935702723354017813583888383999999999,20138421021124611879118377356171332502421503999999999,86207747170389393547654785051203993323065877463039999999999,1424961094686675188099337917796466549896781262788937908223999999999999

%N Natural numbers of the form (prime(n)!-3)/3.

%F a(n)=(A139189(n+1)-2)/3. - _R. J. Mathar_, May 25 2008

%t Table[(Prime[n]! - 3)/3, {n, 2, 20}]

%Y Cf. A139189, A139190, A139191, A139192, A139193, A139194, A139195, A139196, A139197, A139198.

%K nonn

%O 1,2

%A _Artur Jasinski_, Apr 11 2008

%E More terms from _R. J. Mathar_, May 25 2008

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 25 13:02 EDT 2024. Contains 371969 sequences. (Running on oeis4.)