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Third diagonal of A059922.
2

%I #9 Oct 04 2022 16:09:38

%S 1,4,41,1682,346493,428611842,3711778551721,257155729841782602,

%T 160344312228246705825061,999795050381098913077708678362,

%U 68574254851594531153034763076600504945,56440708711718407654211348073962227066902939026

%N Third diagonal of A059922.

%H Reinhard Zumkeller, <a href="/A059730/b059730.txt">Table of n, a(n) for n = 3..28</a>

%o (Haskell) see entry in A059922.

%K nonn

%O 3,2

%A _N. J. A. Sloane_, Feb 09 2001