Number of n-step self-avoiding walks on the upper two quadrants of a 2D square lattice where the walk cannot step to the smaller square ring of numbers than the ring it is currently on.
A348008
Number of n-step self-avoiding walks on the upper two quadrants of a 2D square lattice where the walk cannot step to the smaller square ring of numbers than the ring it is currently on.
Terms
- a(0) =1a(1) =3a(2) =7a(3) =19a(4) =45a(5) =115a(6) =273a(7) =683a(8) =1629a(9) =4035a(10) =9643a(11) =23713a(12) =56761a(13) =138883a(14) =332807a(15) =811343a(16) =1945777a(17) =4730655a(18) =11351999a(19) =27542291a(20) =66123953a(21) =160174529a(22) =384700337a(23) =930720767a(24) =2236106651a(25) =5404679299a(26) =12988762401a(27) =31370201873a(28) =75409375419a(29) =182019777165
External references
- oeis: A348008