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, 0), (0, -1, 0), (0, 0, 1), (1, 1, -1), (1, 1, 0)}.
A150599
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, 0), (0, -1, 0), (0, 0, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =109a(5) =460a(6) =2003a(7) =8904a(8) =40189a(9) =183714a(10) =848507a(11) =3951059a(12) =18522979a(13) =87344376a(14) =413914957a(15) =1969793273a(16) =9408674499a(17) =45086299096a(18) =216670214407
External references
- oeis: A150599