|
| |
|
|
A159227
|
|
1/4 the number of nXn arrays of squares of integers with every 2X2 subblock summing to 27
|
|
0
| |
|
|
7, 22, 45, 103, 193, 421, 777, 1681, 3097, 6697, 12345, 26713, 49273, 106681, 196857, 426361, 786937, 1704697, 3146745, 6817273, 12584953, 27266041, 50335737, 109058041, 201334777, 436219897
(list; graph; refs; listen; history; internal format)
|
| |
| |
|
|
