|
| |
|
|
A156418
|
|
Number of 15 X 15 arrays of squares of integers, symmetric about both diagonal and antidiagonal, with all rows summing to n.
|
|
0
|
|
|
|
1, 6512, 9783480, 1609793976, 142719383676, 2380048630848, 35263399597916, 162770370597240, 1794934830265052, 6285859127170900, 53808016711020432
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
0,2
|
|
|
LINKS
|
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
