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, -1, 0), (0, 1, -1), (0, 1, 1), (1, 0, -1), (1, 1, 1)}.
A150938
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, -1, 0), (0, 1, -1), (0, 1, 1), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =34a(4) =149a(5) =655a(6) =2973a(7) =13574a(8) =63259a(9) =295719a(10) =1395582a(11) =6621009a(12) =31568103a(13) =151073381a(14) =725686598a(15) =3495808919a(16) =16883082255a(17) =81722920784a(18) =396384608135
External references
- oeis: A150938