A336833 Triangle read by rows, 1 <= k <= n: T(n,k) is the number of graceful labelings of the n X k grid graph.
1, 2, 16, 4, 128, 5728, 4, 1416, 580728, 758857152
Offset: 1
Examples
Triangle begins: n\k 1 2 3 4 ------------------------------- 1: 1 2: 2 16 3: 4 128 5728 4: 4 1416 580728 758857152
Links
- Eric Weisstein's World of Mathematics, Graceful Labeling
- Eric Weisstein's World of Mathematics, Grid Graph
- Wikipedia, Graceful labeling
Extensions
T(4,4) from Pontus von Brömssen, Nov 04 2020 (Copied from A337796.)