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 A209596 #7 Jul 22 2025 21:50:56 %S A209596 663552,996451875,161128382464,8009033203125,191221621088256, %T A209596 2767247026234327,27831388078080000,212299175847866409, %U A209596 1303210000000000000,6714011580463844811,29941085586484887552 %N A209596 Number of 5X5 0..n arrays with every element equal to a diagonal or antidiagonal reflection. %C A209596 Row 5 of A209593 %H A209596 R. H. Hardin, <a href="/A209596/b209596.txt">Table of n, a(n) for n = 1..50</a> %F A209596 a(n) = (n+1) ^ 9 * ((n+1)*(2*n+1)) ^ 4 %K A209596 nonn %O A209596 1,1 %A A209596 _R. H. Hardin_ Mar 10 2012