|
| |
|
|
A154072
|
|
Number of planar triangular n X n X n nonnegative integer grids symmetric under 120 degree rotation with every similarly oriented 4 X 4 X 4 subtriangle summing to 9.
|
|
0
| |
|
|
20, 60, 123, 304, 180, 208, 509, 248, 136, 220, 132, 58, 42, 78
(list; graph; refs; listen; history; internal format)
|
| |
| |
|
|
