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 A183960 #7 Jun 02 2025 03:23:48 %S A183960 3,37,339,1805,7250,23611,65909,163588,369777,775045,1525468,2847243, %T A183960 5078854,8712108,14442500,23231857,36384941,55641864,83284699, %U A183960 122267246,176362928,250341134,350161711,483206291,658533921,887179738,1182476762 %N A183960 Number of strings of numbers x(i=1..9) in 0..n with sum i^2*x(i) equal to n*81. %C A183960 Row 9 of A183953 %H A183960 R. H. Hardin, <a href="/A183960/b183960.txt">Table of n, a(n) for n = 1..200</a> %e A183960 Some solutions for n=3 %e A183960 ..0....1....2....0....3....0....2....3....3....2....0....3....3....2....1....3 %e A183960 ..2....1....0....1....3....2....3....3....0....1....0....0....3....1....0....3 %e A183960 ..3....2....2....2....2....2....2....1....2....2....2....1....1....1....2....0 %e A183960 ..3....0....0....2....0....2....0....0....0....0....1....3....2....2....2....0 %e A183960 ..3....3....1....0....1....0....0....1....2....0....0....0....1....3....3....0 %e A183960 ..1....0....1....3....2....2....0....0....3....2....0....1....0....2....1....1 %e A183960 ..1....0....2....0....1....1....1....1....0....3....0....3....0....1....0....0 %e A183960 ..0....1....1....0....1....1....0....1....1....0....2....0....0....0....0....3 %e A183960 ..0....1....0....1....0....0....2....1....0....0....1....0....2....0....1....0 %K A183960 nonn %O A183960 1,1 %A A183960 _R. H. Hardin_ Jan 08 2011