|
| |
|
|
A156411
|
|
Number of 12 X 12 arrays of squares of integers, symmetric under 90-degree rotation, with all rows summing to n.
|
|
0
|
|
|
|
1, 120, 8940, 216680, 1939740, 7574400, 18391220, 48340560, 133072650, 294400160, 636803010, 1521100320, 3164432181, 5269056120, 9096418860, 18579992000, 34459271550, 49721066400, 70412760560, 126260708400, 215977376730
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
|
OFFSET
|
0,2
|
|
|
LINKS
|
|
|
|
CROSSREFS
|
|
|
|
KEYWORD
|
nonn
|
|
|
AUTHOR
|
|
|
|
STATUS
|
approved
|
| |
|
|
