|
| |
|
|
A166215
|
|
Number of 7X7X7 triangular nonnegative integer arrays, symmetric under 120 degree rotation, with all sums of an element and its neighbors <= n
|
|
1
| |
|
|
1, 13, 90, 553, 2376, 8064, 25771, 70603, 172012, 405175, 875990, 1765534, 3484228, 6508702, 11604117, 20390870, 34490146, 56425254, 91343551, 143775379, 220716013, 336122564, 500966646, 732267501, 1063633842, 1518831488
(list; graph; refs; listen; history; internal format)
|
| |
| |
|
|
