L_2 norm of vertices of Permuto-Associahedron in R^n.

Terms

a(0) =0a(1) =0a(2) =5a(3) =122a(4) =1022a(5) =5122a(6) =18847a(7) =56332a(8) =144924a(9) =332844a(10) =699369a(11) =1367894a(12) =2522234a(13) =4426526a(14) =7449091a(15) =12090616a(16) =19017016a(17) =29097336a(18) =43447053a(19) =63477138a(20) =90949238a(21) =128037338a(22) =177396263a(23) =242237380a(24) =326411860a(25) =434501860a(26) =571919985a(27) =745017390