Number of n-step self-avoiding walks on cubic lattice.

Terms

a(0) =1a(1) =6a(2) =30a(3) =150a(4) =726a(5) =3534a(6) =16926a(7) =81390a(8) =387966a(9) =1853886a(10) =8809878a(11) =41934150a(12) =198842742a(13) =943974510a(14) =4468911678a(15) =21175146054a(16) =100121875974a(17) =473730252102