A204732 T(n,k) = Number of (n+1) X (k+1) 0..4 arrays with the permanents of all 2X2 subblocks equal and nonzero.

544, 1624, 1624, 4772, 12744, 4772, 15688, 44726, 44726, 15688, 50920, 353626, 264998, 353626, 50920, 171860, 1425462, 2122560, 2122560, 1425462, 171860, 576738, 10332706, 14348560, 45026614, 14348560, 10332706, 576738, 1965706

Offset

1,1

Comments

Table starts

.....544......1624.......4772........15688..........50920...........171860

....1624.....12744......44726.......353626........1425462.........10332706

....4772.....44726.....264998......2122560.......14348560........108530190

...15688....353626....2122560.....45026614......304649012.......6063334774

...50920...1425462...14348560....304649012.....3884003062......72313926190

..171860..10332706..108530190...6063334774....72313926190....3923500974342

..576738..45388048..763490340..44356355508..1027778516124...49973876676266

.1965706.307057212.5669180550.831511885930.17963607952810.2620184692100666

Links

R. H. Hardin, Table of n, a(n) for n = 1..112

Example

Some solutions for n=4 k=3
..3..1..2..2....3..2..0..2....4..3..4..3....3..0..3..2....4..0..4..0
..2..2..4..0....4..0..4..3....0..1..0..1....1..2..0..2....1..4..2..4
..2..2..0..2....3..2..0..2....4..4..4..3....1..4..3..0....3..4..2..4
..1..3..4..4....1..2..4..1....0..1..0..1....1..2..0..2....4..0..4..0
..2..2..0..2....3..2..0..2....4..3..4..2....1..4..3..3....3..4..4..4

Crossrefs

Sequence in context: A250854 A250685 A051305 * A204725 A266136 A204724

Adjacent sequences: A204729 A204730 A204731 * A204733 A204734 A204735

Keyword

nonn,tabl

Author

R. H. Hardin, Jan 18 2012

Status

approved