Number of n-step self-avoiding walks on cubic lattice ending at point with x = k.

Terms

a(0) =1a(1) =4a(2) =1a(3) =12a(4) =8a(5) =1a(6) =44a(7) =40a(8) =12a(9) =1a(10) =172a(11) =176a(12) =84a(13) =16a(14) =1a(15) =772a(16) =748a(17) =468a(18) =144a(19) =20a(20) =1a(21) =3308a(22) =3248a(23) =2332a(24) =984a(25) =220a(26) =24a(27) =1a(28) =14924a(29) =14280