A365251 - OEIS

%I #9 Aug 29 2023 13:10:35

%S 2,4,8,8,6,2,6,6,1,2,3,4,4,0,8,7,8,2,3,1,9,5,2,7,7,1,6,7,4,9,6,8,8,2,

%T 0,0,3,3,3,6,9,9,4,2,0,6,8,0,4,5,9,0,7,4,8,7,3,8,0,6,2,4,2,6,9,6,9,1,

%U 2,8,6,1,5,4,8,7,0,7,5,5,6,2,9,4,4,1,0,3,4,5,5,7

%N Decimal expansion of the absolute value of psi^(4)(1), the fourth derivative of the digamma function at 1.

%F Equals 24*A013663.

%e psi^(4)(1) = -24.88626612344087823195277167496882...

%p evalf(Psi(4,1)) ;

%t RealDigits[24*Zeta[5], 10, 100][[1]] (* _Amiram Eldar_, Aug 29 2023 *)

%o (PARI) psi''''(1) \\ _Michel Marcus_, Aug 29 2023

%Y Cf. A013663, A231535 (3rd deriv), A152648 (2nd deriv), A013661 (1st deriv).

%K cons,nonn

%O 2,1

%A _R. J. Mathar_, Aug 29 2023