cp's OEIS Frontend

A223326 Rolling icosahedron footprints: number of 6Xn 0..11 arrays starting with 0 where 0..11 label vertices of an icosahedron and every array movement to a horizontal or antidiagonal neighbor moves along an icosahedral edge.

%I A223326 #6 Jul 23 2025 04:00:43
%S A223326 248832,48828125,29007265625,17232311481125,10739266230499625,
%T A223326 6765094542682458125,4288761014162797342625,2725466174591233186641125,
%U A223326 1733931516143286321479437625,1103604638130169667481962994125
%N A223326 Rolling icosahedron footprints: number of 6Xn 0..11 arrays starting with 0 where 0..11 label vertices of an icosahedron and every array movement to a horizontal or antidiagonal neighbor moves along an icosahedral edge.
%C A223326 Row 6 of A223321
%H A223326 R. H. Hardin, <a href="/A223326/b223326.txt">Table of n, a(n) for n = 1..89</a>
%e A223326 Some solutions for n=3
%e A223326 ..0..6..0....0..6..0....0..6..0....0..6..0....0..6..0....0..6..0....0..6..0
%e A223326 ..0..6..0....0..6..0....0..6..0....0..6..0....0..6..0....0..6..0....0..6..0
%e A223326 ..0..6..0....0..6..0....0..6..0....0..6..0....0..6..0....0..6..0....0..6..0
%e A223326 ..0..1..0....0..2..1....0..1..8....0..6..4....0..2..1....0..1..2....0..7.11
%e A223326 ..7..1..0....1..0..2....8..3..1....4..2..0....1..8..2....8..4..2....5..7..3
%e A223326 ..3..1..0....1..8..2....9..3..8....0..7..3....2..6..2....8..4.10....3..7..0
%e A223326 Vertex neighbors:
%e A223326 0 -> 1 2 5 6 7
%e A223326 1 -> 0 2 3 7 8
%e A223326 2 -> 0 1 4 6 8
%e A223326 3 -> 1 7 8 9 11
%e A223326 4 -> 2 6 8 9 10
%e A223326 5 -> 0 6 7 10 11
%e A223326 6 -> 0 2 4 5 10
%e A223326 7 -> 0 1 3 5 11
%e A223326 8 -> 1 2 3 4 9
%e A223326 9 -> 3 4 8 10 11
%e A223326 10 -> 4 5 6 9 11
%e A223326 11 -> 3 5 7 9 10
%K A223326 nonn
%O A223326 1,1
%A A223326 _R. H. Hardin_ Mar 19 2013