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A066912 Fourth column of the Eulerian triangle A008292 in square array format. 1

%I #7 Apr 24 2022 17:19:38

%S 0,1,26,302,2416,15619,88234,455192,2203488,10187685,45533450,

%T 198410786,848090912,3572085255,14875399450,61403313100,251732291184,

%U 1026509354985,4168403181210,16871482830550,68111623139600

%N Fourth column of the Eulerian triangle A008292 in square array format.

%F a(n) = 4^(n+3) - (n+4)*3^(n+3) + (1/2)*(n+3)*(n+4)*2^(n+3) - (1/6)*(n+2)*(n+3)*(n+4).

%o (PARI) a(n)=4^(n+3)-(n+4)*3^(n+3)+1/2*(n+3)*(n+4)*2^(n+3)-1/6*(n+2)*(n+3)*(n+4)

%Y Essentially the same as A000498.

%K nonn

%O 0,3

%A _Randall L Rathbun_, Jan 22 2002

%E More terms from Larry Reeves (larryr(AT)acm.org), Jun 11 2002

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Last modified April 25 06:14 EDT 2024. Contains 371964 sequences. (Running on oeis4.)