Number of tilings of the d-dimensional zonotope constructed from d+3 vectors.

Terms

a(0) =8a(1) =24a(2) =62a(3) =148a(4) =338a(5) =752a(6) =1646a(7) =3564a(8) =7658a(9) =16360a(10) =34790a(11) =73700a(12) =155618a(13) =327648a(14) =688094a(15) =1441756a(16) =3014618a(17) =6291416a(18) =13107158a(19) =27262932a(20) =56623058a(21) =117440464a(22) =243269582a(23) =503316428a(24) =1040187338a(25) =2147483592a(26) =4429184966