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 A245133 #6 Jul 23 2025 11:28:46 %S A245133 8,8,64,158,1728,5220,66256,217336,2920784,9995864,138879808, %T A245133 488324280,6938896320,24865974872,359129619952,1305229141238, %U A245133 19084811616288,70121208253128,1035266773525472,3836844883595142,57090322839615456 %N A245133 Number of length n 0..7 arrays least squares fitting to a zero slope straight line, with a single point taken as having zero slope. %C A245133 Column 7 of A245134 %H A245133 R. H. Hardin, <a href="/A245133/b245133.txt">Table of n, a(n) for n = 1..207</a> %e A245133 Some solutions for n=7 %e A245133 ..6....2....2....1....5....2....3....4....6....4....5....1....1....4....4....5 %e A245133 ..2....5....0....5....4....6....2....0....0....7....4....6....6....3....1....3 %e A245133 ..0....4....2....7....1....4....7....7....4....1....7....6....0....0....3....4 %e A245133 ..3....2....6....0....5....1....7....1....6....1....6....2....4....4....5....4 %e A245133 ..7....6....5....4....1....6....5....2....6....6....2....3....0....4....0....2 %e A245133 ..3....4....0....2....7....2....3....7....5....6....5....3....6....4....4....7 %e A245133 ..3....2....1....4....3....4....3....1....2....3....6....4....1....2....3....3 %K A245133 nonn %O A245133 1,1 %A A245133 _R. H. Hardin_, Jul 12 2014