T(n,k)=Rolling icosahedron footprints: number of nXk 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.
A223321
T(n,k)=Rolling icosahedron footprints: number of nXk 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.
Terms
- a(0) =1a(1) =5a(2) =12a(3) =25a(4) =125a(5) =144a(6) =125a(7) =1625a(8) =3125a(9) =1728a(10) =625a(11) =21125a(12) =105625a(13) =78125a(14) =20736a(15) =3125a(16) =274625a(17) =3570125a(18) =6865625a(19) =1953125a(20) =248832a(21) =15625a(22) =3570125a(23) =122039125a(24) =603351125a(25) =446265625a(26) =48828125a(27) =2985984a(28) =78125a(29) =46411625
External references
- oeis: A223321