Number of self-avoiding walks of any length from NW to SW corners of a grid or lattice with n rows and 3 columns.
A006189
Number of self-avoiding walks of any length from NW to SW corners of a grid or lattice with n rows and 3 columns.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =11a(4) =38a(5) =126a(6) =415a(7) =1369a(8) =4521a(9) =14933a(10) =49322a(11) =162900a(12) =538021a(13) =1776961a(14) =5868903a(15) =19383671a(16) =64019918a(17) =211443426a(18) =698350195a(19) =2306494009a(20) =7617832221a(21) =25159990673a(22) =83097804242a(23) =274453403400a(24) =906458014441
External references
- oeis: A006189