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1/6 the number of colorings of a 6 X 6 staggered hexagonal array with n colors.
2

%I #11 May 03 2012 16:49:16

%S 1,123933504,607054532700510,42295002762341131520,

%T 221621606435023540827375,227499908955471802467974016,

%U 76749558468512064584917217484,11559255724071428199019433809920,945121792213234612017996840421965,47886238153764555711259823337784000

%N 1/6 the number of colorings of a 6 X 6 staggered hexagonal array with n colors.

%H Alois P. Heinz, <a href="/A068249/b068249.txt">Table of n, a(n) for n = 3..1000</a>

%H Alois P. Heinz, <a href="/A068249/a068249.txt">Formula for A068249</a>

%Y Cf. A068239-A068305, A000332, A002417, A027441, A212194, A212195.

%K nonn

%O 3,2

%A _R. H. Hardin_, Feb 24 2002

%E Extended beyond a(7) by _Alois P. Heinz_, May 03 2012