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), (1, 0, 0), (1, 1, -1), (1, 1, 1)}.
A150513
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), (1, 0, 0), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =103a(5) =412a(6) =1767a(7) =7448a(8) =32787a(9) =142374a(10) =636505a(11) =2815581a(12) =12715041a(13) =56978712a(14) =259309861a(15) =1173034613a(16) =5369403379a(17) =24464452536a(18) =112502096435a(19) =515503557713
External references
- oeis: A150513