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, 0, 1), (1, 1, -1)}.
A150534
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, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =110a(5) =462a(6) =2141a(7) =9556a(8) =45541a(9) =210423a(10) =1017684a(11) =4801563a(12) =23435336a(13) =112095191a(14) =550404475a(15) =2657813608a(16) =13104268115a(17) =63714592627a(18) =315077285841
External references
- oeis: A150534