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 A048805 #7 Mar 02 2025 08:24:56 %S A048805 1,-1,1,1,-2,1,-1,3,-3,1,0,-2,3,-2,1,4,0,-5,5,-5,1,-24,24,0,-10,15,-6, %T A048805 1,104,-168,84,0,-35,21,-7,1,-88,208,-168,56,0,-14,7,-2,1,42,-264,312, %U A048805 -168,84,0,-7,3,-3,1,536,420,-1320,1040,-840,168,0,-10,15,-10,1,-7536 %N A048805 Matrix inverse of A048804. %e A048805 1 %e A048805 -1 1 %e A048805 1 -2 1 %e A048805 -1 3 -3 1 %e A048805 0 -2 3 -2 1 %e A048805 4 0 -5 5 -5 1 %e A048805 -24 24 0 -10 15 -6 1 %e A048805 104 -168 84 0 -35 21 -7 1 %e A048805 -88 208 -168 56 0 -14 7 -2 1 %e A048805 42 -264 312 -168 84 0 -7 3 -3 1 %K A048805 sign,tabl %O A048805 0,5 %A A048805 _Christian G. Bower_, Apr 15 1999