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, 0, 1), (0, 0, 1), (0, 1, -1), (1, -1, 0), (1, 0, 1)}.
A150489
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, 0, 1), (0, 0, 1), (0, 1, -1), (1, -1, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =100a(5) =413a(6) =1772a(7) =7778a(8) =34802a(9) =157902a(10) =724912a(11) =3358969a(12) =15684512a(13) =73715790a(14) =348356092a(15) =1653929306a(16) =7884490185a(17) =37718871521a(18) =181002026123a(19) =870951972338
External references
- oeis: A150489