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, 0, 0), (0, 0, 1), (1, 1, -1), (1, 1, 0)}.
A150461
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, 0, 0), (0, 0, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =97a(5) =394a(6) =1639a(7) =7006a(8) =30413a(9) =133956a(10) =596983a(11) =2684879a(12) =12177221a(13) =55604392a(14) =255445367a(15) =1179737625a(16) =5473536481a(17) =25501221564a(18) =119247669215a(19) =559481255745
External references
- oeis: A150461