cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A139190 a(n) = (prime(n)!-2)/2.

This page as a plain text file.
%I A139190 #10 Apr 29 2015 16:18:44
%S A139190 0,2,59,2519,19958399,3113510399,177843714047999,60822550204415999,
%T A139190 12926008369442488319999,4420880996869850977271807999999,
%U A139190 4111419327088961408862781439999999,6881876545613172523157989790790451199999999,16726263306581903554085031026720375832575999999999,30207631531686917818677566034256998753632255999999999,129311620755584090321482177576805989984598816194559999999999,2137441642030012782149006876694699824845171894183406862335999999999999
%N A139190 a(n) = (prime(n)!-2)/2.
%H A139190 Alois P. Heinz, <a href="/A139190/b139190.txt">Table of n, a(n) for n = 1..85</a>
%F A139190 a(n) = (A139189(n)-1)/2. - _R. J. Mathar_, May 25 2008
%t A139190 Table[(Prime[n]! - 2)/2, {n, 1, 20}]
%o A139190 (PARI) a(n) = (prime(n)!-2)/2 \\ _Charles R Greathouse IV_, Apr 29 2015
%Y A139190 Cf. A139189, A139190, A139191, A139192, A139193, A139194, A139195, A139196, A139197, A139198.
%K A139190 nonn
%O A139190 1,2
%A A139190 _Artur Jasinski_, Apr 11 2008
%E A139190 More terms from _R. J. Mathar_, May 25 2008