|
|
A261761
|
|
T(n,k)=Number of (n+1)X(k+1) 0..1 arrays with each row and column prime, read as a binary number with top and left being the most significant bits.
|
|
9
|
|
|
2, 4, 4, 0, 20, 0, 11, 19, 19, 11, 0, 100, 19, 100, 0, 31, 165, 99, 99, 165, 31, 0, 353, 138, 2673, 138, 353, 0, 0, 885, 197, 4797, 4797, 197, 885, 0, 0, 3548, 380, 53564, 7014, 53564, 380, 3548, 0, 0, 8661, 2580, 174125, 82711, 82711, 174125, 2580, 8661, 0, 0
(list;
table;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
Table starts
..2.....4.....0......11.......0.......31........0.......0.......0........0
..4....20....19.....100.....165......353......885....3548....8661....21544
..0....19....19......99.....138......197......380....2580....5892....10199
.11...100....99....2673....4797....53564...174125.1264975.5828759.28376885
..0...165...138....4797....7014....82711...229036.1430550.5704715
.31...353...197...53564...82711..8124875.25084172
..0...885...380..174125..229036.25084172
..0..3548..2580.1264975.1430550
..0..8661..5892.5828759
..0.21544.10199
|
|
LINKS
|
|
|
EXAMPLE
|
Some solutions for n=4 k=4
..0..0..1..1..1....0..0..0..1..1....0..0..1..1..1....1..0..1..1..1
..0..0..1..1..1....0..0..0..1..0....0..0..1..1..1....0..0..0..1..1
..1..1..1..1..1....0..1..0..1..1....1..1..1..1..1....1..0..1..1..1
..0..0..0..1..1....1..1..1..1..1....1..0..0..1..1....1..1..1..0..1
..1..1..1..1..1....0..1..0..1..1....1..1..1..1..1....1..0..1..1..1
|
|
CROSSREFS
|
|
|
KEYWORD
|
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|