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), (1, 0, 0), (1, 1, -1), (1, 1, 0)}.
A150369
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), (1, 0, 0), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =94a(5) =361a(6) =1576a(7) =6530a(8) =29516a(9) =127878a(10) =590559a(11) =2634070a(12) =12341217a(13) =56173161a(14) =265904947a(15) =1228423217a(16) =5859698492a(17) =27377752283a(18) =131368809993a(19) =619221519393
External references
- oeis: A150369