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First column of triangle A027477, constructed from the Stirling numbers of the first kind.
1

%I #18 Nov 06 2019 17:48:33

%S 1,3,23,330,7604,256620,11923260,729524880,56840099904,5493503695680,

%T 644870893060800,90366972897801600,14899694352066120960,

%U 2855250418022402400000,629258349435218754451200,158034681938560927788288000,44866854739192779425625292800

%N First column of triangle A027477, constructed from the Stirling numbers of the first kind.

%F a(n) = A027477(n,1).

%F a(n) = n!*Sum_{k=1..n} (-1)^(n-k)*Stirling1(n, k)/k. Sum_{n>=0} a(n)*x^n/n!^2 = -log(log(1-x))-Ei(1, log(1-x))-gamma. - _Vladeta Jovovic_, Jan 29 2005

%Y Cf. A027477 (Square of normalized Stirling matrix of the first kind).

%K nonn,easy

%O 1,2

%A _Olivier GĂ©rard_

%E More terms from _Sean A. Irvine_, Nov 06 2019