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 A089841 Main diagonal of A089839. a(n) = A089839(n,n). 2

%I

%S 0,0,0,0,6,0,4,0,0,11,0,9,1653699,1653578,1654426,1654694,1654312,

%T 1655572,1654937,1655787,1655152,1654694,0,0,26,0,24,0,0,35,37,43,41,

%U 0,40,29,41,0,28,0,34,0,28,31,37,0,0,49,0,47,0,0,58,60,66,64,0,63,52

%N Main diagonal of A089839. a(n) = A089839(n,n).

%C When a(n) is 0, the corresponding row in A089840 (referred here as A089840[n]) is an involution.

%H A. Karttunen, <a href="/A089839/a089839.c.txt">C-program for computing the initial terms of this sequence</a>

%K nonn

%O 0,5

%A _Antti Karttunen_, Dec 05 2003

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Last modified December 11 01:07 EST 2019. Contains 329910 sequences. (Running on oeis4.)