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, 0, 1), (0, 1, 1), (1, -1, 0), (1, 1, -1)}.
A150626
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, 0, 1), (0, 1, 1), (1, -1, 0), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =113a(5) =494a(6) =2224a(7) =10227a(8) =47739a(9) =225434a(10) =1074173a(11) =5154661a(12) =24878075a(13) =120632630a(14) =587211729a(15) =2867705582a(16) =14043115362a(17) =68929575741a(18) =339013492930
External references
- oeis: A150626