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, -1, -1), (1, 1, 0), (1, 1, 1)}.
A150678
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, -1, -1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =26a(4) =112a(5) =426a(6) =1878a(7) =7704a(8) =34430a(9) =146964a(10) =663484a(11) =2900464a(12) =13193724a(13) =58620766a(14) =268190674a(15) =1205651118a(16) =5541112164a(17) =25129448440a(18) =115929015680a(19) =529324081408
External references
- oeis: A150678