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), (0, 1, 1), (1, -1, -1), (1, 0, 1)}.
A150179
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), (0, 1, 1), (1, -1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =20a(4) =78a(5) =294a(6) =1232a(7) =5054a(8) =21840a(9) =94060a(10) =414734a(11) =1841452a(12) =8258804a(13) =37354536a(14) =169989700a(15) =778394626a(16) =3584284230a(17) =16570124008a(18) =76984172720a(19) =358776753034
External references
- oeis: A150179