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, 1), (0, 1, 0), (1, 0, 0), (1, 1, -1), (1, 1, 0)}.
A151061
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, 1), (0, 1, 0), (1, 0, 0), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =38a(4) =152a(5) =639a(6) =2771a(7) =12281a(8) =55420a(9) =253364a(10) =1171092a(11) =5460007a(12) =25639273a(13) =121123086a(14) =575076889a(15) =2742195363a(16) =13124176867a(17) =63014222585a(18) =303403995443
External references
- oeis: A151061