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), (0, 1, 0), (1, 1, -1), (1, 1, 0), (1, 1, 1)}.
A151184
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), (0, 1, 0), (1, 1, -1), (1, 1, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =51a(4) =227a(5) =1032a(6) =4771a(7) =22303a(8) =105172a(9) =499224a(10) =2382287a(11) =11417067a(12) =54911577a(13) =264895775a(14) =1281143686a(15) =6209829047a(16) =30157663079a(17) =146707096810a(18) =714753840271
External references
- oeis: A151184