# Greetings from The On-Line Encyclopedia of Integer Sequences! http://oeis.org/

Search: id:a090645
Showing 1-1 of 1

%I A090645 #8 Nov 21 2013 12:48:16
%S A090645 0,5,17,195,4369,158875,8493081,626349395,60921163553,7555181167755,
%T A090645 1163556514166185,217865966280741955,48740349457479955377,
%U A090645 12839917161220487631995,3934089704476487908489529
%N A090645 a(n)=(-1)^(n+1)*2*(16^n-1)*B(2n) where B(k) denotes the k-th Bernoulli number.
%t A090645 Table[(-1)^(n+1) 2(16^n-1)BernoulliB[2n],{n,0,20}] (* _Harvey P. Dale_, Nov 10 2011 *)
%o A090645 (PARI) a(n)=(-1)^(n+1)*2*(16^n-1)*bernfrac(2*n)
%K A090645 nonn
%O A090645 0,2
%A A090645 _Benoit Cloitre_, Dec 13 2003

# Content is available under The OEIS End-User License Agreement: http://oeis.org/LICENSE