A244507 Square roots of A244506.

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

Offset

1,2

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.

Links

Table of n, a(n) for n=1..10.

Crossrefs

Cf. A244506, A244500.

Sequence in context: A052186 A330518 A228656 * A367016 A074538 A364739

Adjacent sequences: A244504 A244505 A244506 * A244508 A244509 A244510

Keyword

nonn,hard,more

Author

Heinrich Ludwig, Jul 11 2014

Extensions

a(10) from Heinrich Ludwig, Aug 17 2014

Status

approved