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), (1, -1, 1), (1, 0, 0), (1, 1, -1), (1, 1, 0)}.
A150587
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), (1, -1, 1), (1, 0, 0), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =26a(4) =111a(5) =481a(6) =2193a(7) =10085a(8) =47474a(9) =224803a(10) =1077775a(11) =5188995a(12) =25162971a(13) =122400320a(14) =598066157a(15) =2928994719a(16) =14387003558a(17) =70791737849a(18) =349043371267
External references
- oeis: A150587