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), (-1, 1, -1), (0, 0, 1), (1, -1, 0), (1, 1, 1)}.
A150476
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), (-1, 1, -1), (0, 0, 1), (1, -1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =99a(5) =408a(6) =1743a(7) =7592a(8) =33651a(9) =151142a(10) =686105a(11) =3140899a(12) =14483587a(13) =67201968a(14) =313451655a(15) =1468679425a(16) =6909242269a(17) =32619395556a(18) =154484826721a(19) =733698600403
External references
- oeis: A150476