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Square roots of A244506.
3

%I #14 Aug 17 2014 15:29:54

%S 1,3,14,78,468,2907,18392,117645,757965,4908540

%N Square roots of A244506.

%C A244506 gives the number of ways to place the maximal number of points that can be placed on a j X j X j triangular grid, j = 3n-2, so that no pair of them has distance sqrt(3). These numbers are all square numbers. A244507 gives the roots of them.

%Y Cf. A244506, A244500.

%K nonn,hard,more

%O 1,2

%A _Heinrich Ludwig_, Jul 11 2014

%E a(10) from _Heinrich Ludwig_, Aug 17 2014