Number of undirected walks of length n+1 on tetrahedron, visiting n+2 vertices, with n "corners", as in A001998, but allowing only rigid motions in 3-space (|G| = 12). Walks are not self-avoiding.

A051436

Number of undirected walks of length n+1 on tetrahedron, visiting n+2 vertices, with n "corners", as in A001998, but allowing only rigid motions in 3-space (|G| = 12). Walks are not self-avoiding.

Terms

    a(0) =1a(1) =2a(2) =5a(3) =12a(4) =39a(5) =111a(6) =350a(7) =1044a(8) =3201a(9) =9627a(10) =29150a(11) =87672a(12) =264069a(13) =793431a(14) =2384450a(15) =7159164a(16) =21494001a(17) =64507827a(18) =193589270a(19) =580878432a(20) =1742897949a(21) =5229157551a(22) =15688522250a(23) =47067483684a(24) =141206647401a(25) =423627793227

External references