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%I A091348 #9 Oct 21 2022 09:48:11
%S A091348 0,1,31,391,3451,25231,164731,999391,5767051,32122831,174397531,
%T A091348 929043391,4879252651,25349936431,130617150331,668714319391,
%U A091348 3406562690251,17286209766031,87448932863131,441329102667391,2223021985199851,11180731992411631,56166496811775931,281884877304327391
%N A091348 a(n) = 24*5^n - 60*4^n + 50*3^n - 15*2^n + 1.
%H A091348 <a href="/index/Rec#order_05">Index entries for linear recurrences with constant coefficients</a>, signature (15,-85,225,-274,120).
%F A091348 a(n) = Sum_{i=1..n} i!*i^4*Stirling2(n, i)*(-1)^(n-i).
%t A091348 Table[24*5^n - 60*4^n + 50*3^n - 15*2^n + 1, {n, 0, 25}]
%o A091348 (PARI) a(n) = sum(i=1, n, i!*i^4*stirling(n, i, 2)*(-1)^(n-i)); \\ _Michel Marcus_, Oct 21 2022
%Y A091348 Cf. A091344, A091347.
%K A091348 nonn,easy
%O A091348 0,3
%A A091348 Mario Catalani (mario.catalani(AT)unito.it), Jan 03 2004
%E A091348 More terms from _Michel Marcus_, Oct 21 2022

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