Triangular array: rows are the f-vectors of simplicial complexes dual to permutohedra of type D_n.

Terms

a(0) =1a(1) =1a(2) =1a(3) =1a(4) =4a(5) =4a(6) =1a(7) =14a(8) =36a(9) =24a(10) =1a(11) =48a(12) =240a(13) =384a(14) =192a(15) =1a(16) =162a(17) =1440a(18) =4160a(19) =4800a(20) =1920a(21) =1a(22) =536a(23) =8216a(24) =38400a(25) =76800a(26) =69120a(27) =23040a(28) =1a(29) =1738