Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 1), (0, -1, 1), (0, 1, -1), (0, 1, 1), (1, 0, 1)}.
A150816
Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 1), (0, -1, 1), (0, 1, -1), (0, 1, 1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =31a(4) =136a(5) =590a(6) =2693a(7) =12262a(8) =57207a(9) =266993a(10) =1262974a(11) =5981798a(12) =28565047a(13) =136604608a(14) =656810502a(15) =3162420406a(16) =15283892129a(17) =73959776962a(18) =358882669335
External references
- oeis: A150816