A244507 Square roots of A244506.

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

Offset: 1

Author

Heinrich Ludwig, Jul 11 2014

Keywords

• nonn
• hard
• more

Comments

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.

Crossrefs

Cf. A244506, A244500.

Extensions

a(10) from Heinrich Ludwig, Aug 17 2014