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 A263785 #6 Jul 23 2025 15:38:34 %S A263785 0,0,0,1,5,66,392,3522,15699,104014,463811,2735525,12858073,74523350, %T A263785 369725340,2110660483,10653316753,59256398945,300481718854, %U A263785 1633653025795,8329842362903,44742563812167,229817730687508,1226116608834208 %N A263785 Number of length n arrays of permutations of 0..n-1 with each element moved by -6 to 6 places and exactly two more elements moved upwards than downwards. %C A263785 Column 6 of A263787 %H A263785 R. H. Hardin, <a href="/A263785/b263785.txt">Table of n, a(n) for n = 1..96</a> %e A263785 Some solutions for n=7 %e A263785 ..4....0....6....5....6....0....6....2....0....5....4....3....3....6....6....4 %e A263785 ..0....6....0....6....5....6....5....0....6....1....1....5....0....0....0....0 %e A263785 ..1....5....2....0....1....3....1....1....1....0....0....0....1....4....1....6 %e A263785 ..3....1....3....3....3....2....3....6....4....2....2....1....2....2....4....2 %e A263785 ..2....2....1....2....2....1....0....4....3....6....3....2....5....1....3....3 %e A263785 ..6....4....5....1....4....4....4....3....2....4....6....4....4....5....5....5 %e A263785 ..5....3....4....4....0....5....2....5....5....3....5....6....6....3....2....1 %Y A263785 Cf. A263787 %K A263785 nonn %O A263785 1,5 %A A263785 _R. H. Hardin_, Oct 26 2015