cp's OEIS Frontend

A190837 Number of permutations of 8 copies of 1..n introduced in order 1..n with no element equal to another within a distance of 1.

%I A190837 #17 Nov 10 2024 21:46:54
%S A190837 1,0,1,400598,1530622143864,28920026907938624194,
%T A190837 2070756746775910218326948065,459408385876250801291447710561829082,
%U A190837 271259741131895052775392614041761701799270286,379065045836307787068046364731543393514652159389593652
%N A190837 Number of permutations of 8 copies of 1..n introduced in order 1..n with no element equal to another within a distance of 1.
%H A190837 Seiichi Manyama, <a href="/A190837/b190837.txt">Table of n, a(n) for n = 0..78</a>
%F A190837 a(n) ~ sqrt(8) * 131072^n * n^(7*n) / (315^n * exp(7*n + 7)). - _Vaclav Kotesovec_, Nov 24 2018
%e A190837 Some solutions for n=3
%e A190837 ..1....1....1....1....1....1....1....1....1....1....1....1....1....1....1....1
%e A190837 ..2....2....2....2....2....2....2....2....2....2....2....2....2....2....2....2
%e A190837 ..1....1....1....1....1....1....1....1....1....1....1....1....1....1....1....1
%e A190837 ..2....2....2....3....2....3....2....2....3....2....2....2....3....2....2....2
%e A190837 ..3....3....3....1....3....1....1....1....1....1....1....3....1....3....3....3
%e A190837 ..2....1....1....3....1....2....2....3....2....3....3....1....3....1....2....1
%e A190837 ..3....3....2....1....2....1....3....2....3....1....1....3....1....3....3....2
%e A190837 ..1....2....3....2....1....2....1....1....2....3....3....2....2....2....2....3
%e A190837 ..3....1....1....1....3....1....2....3....3....2....1....1....3....3....3....2
%e A190837 ..1....3....2....2....2....2....1....2....1....1....2....3....1....1....2....3
%e A190837 ..2....1....1....1....3....3....3....1....3....3....1....2....3....3....3....1
%e A190837 ..1....3....3....3....1....1....1....2....1....2....2....3....2....2....1....3
%e A190837 ..2....2....1....2....3....3....2....3....3....3....3....2....3....3....2....2
%e A190837 ..3....3....3....3....1....1....3....1....2....2....2....3....2....2....1....3
%e A190837 ..1....1....2....2....3....3....2....3....1....3....3....1....1....3....2....1
%e A190837 ..3....3....3....3....2....2....3....2....3....2....1....3....3....1....3....3
%e A190837 ..2....2....1....1....3....3....1....3....2....1....2....1....2....3....1....2
%e A190837 ..1....3....3....3....2....2....3....2....3....3....3....2....1....2....3....1
%e A190837 ..3....2....2....2....3....1....1....1....2....2....2....1....2....3....1....2
%e A190837 ..2....1....3....3....1....3....3....3....3....3....3....3....3....1....3....3
%e A190837 ..3....2....1....2....2....2....2....1....2....1....1....1....2....2....1....1
%e A190837 ..1....3....2....3....1....3....3....3....1....3....3....2....1....1....3....3
%e A190837 ..2....2....3....1....3....2....2....2....2....2....2....3....3....2....2....2
%e A190837 ..3....1....2....2....2....3....3....3....1....1....3....2....2....1....1....1
%Y A190837 Row n=8 of A322013.
%K A190837 nonn
%O A190837 0,4
%A A190837 _R. H. Hardin_, May 21 2011
%E A190837 a(0)=1 prepended and a(7)-a(9) added by _Seiichi Manyama_, Nov 16 2018