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, 1), (0, 0, 1), (0, 1, -1), (1, 0, 0), (1, 1, 1)}.
A151188
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, 1), (0, 0, 1), (0, 1, -1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =51a(4) =230a(5) =1066a(6) =5037a(7) =24081a(8) =116155a(9) =563954a(10) =2751764a(11) =13479127a(12) =66228723a(13) =326217488a(14) =1610074095a(15) =7959928866a(16) =39407349421a(17) =195323404901a(18) =969088147662
External references
- oeis: A151188