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, 1), (0, 1, 1), (1, 0, -1), (1, 0, 1)}.
A150607
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, 1), (0, 1, 1), (1, 0, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =111a(5) =471a(6) =2070a(7) =9205a(8) =41712a(9) =190680a(10) =880088a(11) =4092508a(12) =19136861a(13) =89985447a(14) =424886474a(15) =2013955551a(16) =9578423131a(17) =45684653123a(18) =218478608672
External references
- oeis: A150607