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, 0, 1), (1, 1, 1)}.
A150829
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, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =32a(4) =131a(5) =584a(6) =2603a(7) =11787a(8) =54485a(9) =252720a(10) =1184335a(11) =5578698a(12) =26422861a(13) =125707588a(14) =599883710a(15) =2873578224a(16) =13798398795a(17) =66416805600a(18) =320422819431
External references
- oeis: A150829