Number of n-step self-avoiding walks on a square lattice where no step can be in the same direction as the previous step.

A337353

Number of n-step self-avoiding walks on a square lattice where no step can be in the same direction as the previous step.

Terms

    a(0) =1a(1) =4a(2) =8a(3) =16a(4) =24a(5) =40a(6) =64a(7) =104a(8) =168a(9) =272a(10) =440a(11) =712a(12) =1128a(13) =1808a(14) =2896a(15) =4640a(16) =7368a(17) =11744a(18) =18752a(19) =29920a(20) =47376a(21) =75304a(22) =119824a(23) =190632a(24) =301488a(25) =478160a(26) =759056a(27) =1204848a(28) =1903576a(29) =3014272

External references