A209586 -id:A209586 - cp's OEIS frontend

A209684 T(n,k) = Number of n X n 0..k arrays with every element equal to a diagonal or antidiagonal reflection, and new values 0 upwards introduced in row major order.

1, 1, 8, 1, 14, 96, 1, 15, 608, 4608, 1, 15, 1243, 246038, 331776, 1, 15, 1508, 2143147, 166075313, 95551488, 1, 15, 1549, 6716352, 6713848491, 1008907523438, 41278242816, 1, 15, 1551, 11315839, 66825091608, 336865786047147

Offset: 1

R. H. Hardin, Mar 11 2012

Table starts
......1.........1..........1...........1............1............1............1
......8........14.........15..........15...........15...........15...........15
.....96.......608.......1243........1508.........1549.........1551.........1551
...4608....246038....2143147.....6716352.....11315839.....13575355.....14164693
.331776.166075313.6713848491.66825091608.268997909000.584728215424.847881355388

			Some solutions for n=3, k=3
..0..1..0....0..0..1....0..1..0....0..0..1....0..1..0....0..1..0....0..1..1
..1..2..3....0..1..1....1..1..1....2..2..0....0..1..1....2..3..1....1..0..2
..2..3..1....2..1..0....1..1..1....3..2..0....0..0..1....2..2..1....3..2..1

R. H. Hardin, Table of n, a(n) for n = 1..988

Column 1 is A209586/2.

cp's OEIS Frontend

A209684 T(n,k) = Number of n X n 0..k arrays with every element equal to a diagonal or antidiagonal reflection, and new values 0 upwards introduced in row major order.

Views

Author

Keywords

Comments

Examples

Links

Crossrefs