A153577 - OEIS

%I #4 Mar 05 2019 12:03:48

%S -1,1,-7,24,-121,720,-5040,40319,-362880,3628800,-39916801,479001600,

%T -6227020801,87178291199,-1307674368000,20922789887999,

%U -355687428096000,6402373705728000,-121645100408832001,2432902008176640000

%N Floor of value of n-th derivative of Zeta(x) at x=2.

%H Vaclav Kotesovec, <a href="/A153577/b153577.txt">Table of n, a(n) for n = 1..100</a>

%F a(n) ~ (-1)^n * n!. - _Vaclav Kotesovec_, Mar 05 2019

%t Table[Floor[Derivative[k][Zeta][2]], {k, 1, 20}]

%K sign

%O 1,3

%A _Vladimir Reshetnikov_, Dec 28 2008