A204789 Number of (n+1)X7 0..7 arrays with the permanents of all 2X2 subblocks equal and nonzero

2831919, 986079019, 8567876319, 3696936217731, 32915600155409

Offset

1,1

Comments

Column 6 of A204791

Links

Table of n, a(n) for n=1..5.

Example

Some solutions for n=4
..2..5..1..0..1..0..1....5..6..3..5..5..5..6....2..7..1..2..1..2..1
..1..0..1..5..4..5..2....5..3..6..5..4..5..3....1..0..1..5..1..5..1
..0..5..1..0..1..0..1....5..6..3..5..5..5..6....4..7..0..7..0..7..0
..1..0..1..5..3..5..6....5..3..6..5..4..5..3....1..0..1..1..1..7..1
..2..5..1..0..1..0..1....5..6..3..5..5..5..6....5..7..0..7..0..7..0

Crossrefs

Sequence in context: A204744 A258563 A204413 * A204524 A321669 A237944

Adjacent sequences: A204786 A204787 A204788 * A204790 A204791 A204792

Keyword

nonn

Author

R. H. Hardin Jan 19 2012

Status

approved