A153517 Floor of reciprocal of Zeta'(n), where Zeta'(n) is the derivative of Riemann zeta function.

-2, -6, -15, -35, -78, -166, -345, -707, -1435, -2899, -5835, -11721, -23507, -47101, -94318, -188791, -377786, -755845, -1512052, -3024587, -6049818, -12100492, -24202125, -48405772, -96813572, -193629847, -387263296

Offset: 2

Author

Vladimir Reshetnikov, Dec 28 2008

Keywords

• sign

Examples

			Floor(1/Zeta'(2)) = -2.
		

Links

• G. C. Greubel, Table of n, a(n) for n = 2..1000

Crossrefs

a(2) = floor(1/-A073002), a(3) = floor(1/-A244115), a(4) = floor(1/-A261506).

Programs

Mathematica

Table[Floor[1/Zeta'[k]], {k, 2, 40}]

PARI

a(n) = floor(1/zeta'(n)) \\ Iain Fox, Nov 08 2017