A204962 T(n,k) is the number of (n+1) X (k+1) 0..1 arrays with rows and columns of permanents of all 2 X 2 subblocks lexicographically nondecreasing.

16, 51, 51, 156, 277, 156, 450, 1436, 1436, 450, 1267, 6921, 12714, 6921, 1267, 3490, 32468, 103106, 103106, 32468, 3490, 9490, 147434, 807253, 1442543, 807253, 147434, 9490, 25545, 659392, 5988660, 19632936, 19632936, 5988660, 659392, 25545, 68286

Offset

1,1

Comments

Table starts

....16......51.......156.........450..........1267............3490

....51.....277......1436........6921.........32468..........147434

...156....1436.....12714......103106........807253.........5988660

...450....6921....103106.....1442543......19632936.......252709954

..1267...32468....807253....19632936.....476276892.....11028008070

..3490..147434...5988660...252709954...11028008070....470866502871

..9490..659392..43018570..3129723425..246591161060..19640644500055

.25545.2907273.298869279.37097334426.5248210960544.782197120564655

Links

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

Example

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

Crossrefs

Column 1 is A204716.

Sequence in context: A121864 A221485 A204723 * A080860 A204716 A192248

Adjacent sequences: A204959 A204960 A204961 * A204963 A204964 A204965

Keyword

nonn,tabl

Author

R. H. Hardin, Jan 20 2012

Status

approved