Klee's identity is the binomial sum
where is a binomial coefficient. For , 1, ... and , 1,..., the following array is obtained.
1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
0 | 0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | |
0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 0 | ||
0 | 0 | 0 | 6 | 1 | 0 | 0 | 0 | 0 | ||
0 | 0 | 0 | 0 | 4 | 6 | 0 | 0 | 0 | ||
0 | 0 | 0 | 0 | 1 | 15 | 1 | 0 | 0 | ||
0 | 0 | 0 | 0 | 0 | 20 | 8 | 0 | |||
0 | 0 | 0 | 0 | 0 | 15 | 28 | 1 |
(OEIS A092865)