%I #9 Apr 07 2021 19:45:26
%S 1,30,3750,1953750,4242798750,38404604583750,1448977637979903750,
%T 227870224522898915943750,149369176223578379939728893750,
%U 408114381491174443782294469248048750,4647830909678374872940213803359098309308750
%N 1/7 of the number of 7-colorings of a planar n X n X n triangular grid.
%Y 7th row of A182797/7.
%K nonn
%O 1,2
%A _R. H. Hardin_, Dec 27 2008
%E a(8)-a(11) from _Alois P. Heinz_, Dec 03 2010