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 A184245 #8 Jun 02 2025 03:27:29 %S A184245 2,4,41,31,213,176,706,571,2355,1508,5431,3445,10802,6673,22692,13525, %T A184245 39450,21062,62786,39829,103520,54727,160264,88909,241185,123101, %U A184245 329276,192191,488530,242300,650781,371934,859075,437857,1241808,621669,1539413 %N A184245 Number of strings of numbers x(i=1..7) in 0..n with sum i^2*x(i)^2 equal to n^2*49. %C A184245 Row 7 of A184240 %e A184245 Some solutions for n=5 %e A184245 ..0....5....2....2....1....2....2....1....1....4....4....4....4....2....4....4 %e A184245 ..4....3....3....0....0....2....2....3....3....1....3....3....4....0....4....5 %e A184245 ..4....2....4....3....2....3....2....4....4....4....4....4....5....5....3....5 %e A184245 ..2....4....1....4....1....5....3....1....3....2....2....4....0....5....3....2 %e A184245 ..1....2....4....2....4....4....4....2....0....3....5....4....2....4....4....0 %e A184245 ..2....4....4....0....4....3....4....2....5....4....2....3....1....0....3....1 %e A184245 ..4....2....1....4....2....0....1....4....0....2....2....1....4....2....2....4 %K A184245 nonn %O A184245 1,1 %A A184245 _R. H. Hardin_ Jan 10 2011