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The number of six-fold coverings of a set.
1

%I #11 Dec 11 2018 03:21:52

%S 1,1,7,256,52450,46757209,135029200594,992649275638900,

%T 15637211080656145509,468371757818481922636261,

%U 24491541042280069722306974244,2097907014780540445950132842480077,280173584370772226399860619059838944713,56066456120812871209756615894736908159099853

%N The number of six-fold coverings of a set.

%C Analogous to A165434. See comments and references there.

%Y Row n=6 of A188392.

%Y Cf. A165434.

%K nonn

%O 0,3

%A _Doron Zeilberger_, Sep 18 2009

%E a(11)-a(13) from _Andrew Howroyd_, Dec 10 2018