The number of random walks on the simple square lattice that return to the origin (0,0) after 2n steps and do not pass through (0,0) or (1,0) at intermediate steps.
A337869
The number of random walks on the simple square lattice that return to the origin (0,0) after 2n steps and do not pass through (0,0) or (1,0) at intermediate steps.
Terms
- a(0) =3a(1) =13a(2) =106a(3) =1073a(4) =12142a(5) =147090a(6) =1865772a(7) =24463905a(8) =328887346a(9) =4508608610a(10) =62781858592a(11) =885513974674
External references
- oeis: A337869