Table read by antidiagonals in which entry T(n,k) in row n and column k gives the number of possible rhombus tilings of an octagon with interior angles of 135 degrees and sequences of side lengths {n, k, 1, 1, n, k, 1, 1} (as the octagon is traversed), n,k in {1,2,3,...}.
A214457
Table read by antidiagonals in which entry T(n,k) in row n and column k gives the number of possible rhombus tilings of an octagon with interior angles of 135 degrees and sequences of side lengths {n, k, 1, 1, n, k, 1, 1} (as the octagon is traversed), n,k in {1,2,3,...}.
Terms
- a(0) =8a(1) =20a(2) =20a(3) =40a(4) =75a(5) =40a(6) =70a(7) =210a(8) =210a(9) =70a(10) =112a(11) =490a(12) =784a(13) =490a(14) =112a(15) =168a(16) =1008a(17) =2352a(18) =2352a(19) =1008a(20) =168a(21) =240a(22) =1890a(23) =6048a(24) =8820a(25) =6048a(26) =1890a(27) =240a(28) =330a(29) =3300
External references
- oeis: A214457