A204784 Number of (n+1)X2 0..7 arrays with the permanents of all 2X2 subblocks equal and nonzero

3871, 13555, 44641, 180069, 688431, 2831919, 11333145, 46809649, 190964841, 791496341, 3264483283, 13586735979, 56476461657, 236142767631, 987919418993, 4150817865787, 17465593473337, 73745244701555, 311975289448169

Offset

1,1

Comments

Column 1 of A204791

Links

R. H. Hardin, Table of n, a(n) for n = 1..210

Example

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

Crossrefs

Sequence in context: A205409 A103117 A204791 * A204783 A035898 A249203

Adjacent sequences: A204781 A204782 A204783 * A204785 A204786 A204787

Keyword

nonn

Author

R. H. Hardin Jan 19 2012

Status

approved