Number of walks of length n on the simple cubic lattice terminating at height 2 above the (x,y)-plane.

A052178

Number of walks of length n on the simple cubic lattice terminating at height 2 above the (x,y)-plane.

Terms

    a(0) =1a(1) =12a(2) =99a(3) =700a(4) =4569a(5) =28476a(6) =172508a(7) =1026288a(8) =6033690a(9) =35195512a(10) =204232809a(11) =1181052756a(12) =6814746393a(13) =39267916380a(14) =226097749224

External references