This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A336833 #12 Feb 16 2025 08:34:00 %S A336833 1,2,16,4,128,5728,4,1416,580728,758857152 %N A336833 Triangle read by rows, 1 <= k <= n: T(n,k) is the number of graceful labelings of the n X k grid graph. %H A336833 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/GracefulLabeling.html">Graceful Labeling</a> %H A336833 Eric Weisstein's World of Mathematics, <a href="https://mathworld.wolfram.com/GridGraph.html">Grid Graph</a> %H A336833 Wikipedia, <a href="https://en.wikipedia.org/wiki/Graceful_labeling">Graceful labeling</a> %e A336833 Triangle begins: %e A336833 n\k 1 2 3 4 %e A336833 ------------------------------- %e A336833 1: 1 %e A336833 2: 2 16 %e A336833 3: 4 128 5728 %e A336833 4: 4 1416 580728 758857152 %Y A336833 First column: A006967; second column: A333719; diagonal: A337796. %K A336833 nonn,tabl,more %O A336833 1,2 %A A336833 _Pontus von Brömssen_, Aug 05 2020 %E A336833 T(4,4) from _Pontus von Brömssen_, Nov 04 2020 (Copied from A337796.)