A067217
Number of n X n 0..9 matrices with all row and column sums equal.
Original entry on oeis.org
1, 10, 100, 30502, 754898668, 1426274971770170, 214919363287707751206910, 2685049440186600182381381075290270
Offset: 0
A067218
Number of n X n 0..10 matrices with all row and column sums equal.
Original entry on oeis.org
1, 11, 121, 48983, 1950230969, 7169135482380621, 2543060905110036322914145, 90495116991790689711315590295804971
Offset: 0
A067219
Number of n X n 0..11 matrices with all row and column sums equal.
Original entry on oeis.org
1, 12, 144, 75516, 4641494832, 31335724079805792, 24293081804978470413606900
Offset: 0
A067220
Number of n X n 0..12 matrices with all row and column sums equal.
Original entry on oeis.org
1, 13, 169, 112489, 10309971465, 121778484808846083, 193842679171307621077398205
Offset: 0
A067221
Number of n X n 0..13 matrices with all row and column sums equal.
Original entry on oeis.org
1, 14, 196, 162722, 21592075596, 428134536074377254, 1326740266296956878519910950
Offset: 0
A067222
Number of n X n 0..14 matrices with all row and column sums equal.
Original entry on oeis.org
1, 15, 225, 229503, 42980713761, 1380524064964529355, 7955148565342992851131291305
Offset: 0
A067223
Number of n X n 0..15 matrices with all row and column sums equal.
Original entry on oeis.org
1, 16, 256, 316624, 81851507456, 4128449284755670956, 42503886964244001261643010752
Offset: 0
A202787
Number of 5 X 5 0..n arrays with row and column sums equal.
Original entry on oeis.org
1, 4322, 2577513, 290838284, 11991502235, 255657603186, 3430832678207, 32701809796548, 239657412990669, 1426274971770170, 7169135482380621, 31335724079805792, 121778484808846083, 428134536074377254, 1380524064964529355, 4128449284755670956
Offset: 0
Some solutions for n=1
..1..0..1..0..1....1..0..0..1..1....1..0..0..1..1....1..0..0..1..1
..0..1..1..0..1....1..1..1..0..0....0..1..1..0..1....1..1..1..0..0
..1..1..0..1..0....1..1..1..0..0....0..1..1..1..0....0..1..0..1..1
..1..0..0..1..1....0..1..0..1..1....1..0..1..0..1....1..1..1..0..0
..0..1..1..1..0....0..0..1..1..1....1..1..0..1..0....0..0..1..1..1