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, 1, -1), (0, 1, 0), (1, 0, 0), (1, 0, 1)}.
A151076
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, 1, -1), (0, 1, 0), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =40a(4) =172a(5) =752a(6) =3417a(7) =15861a(8) =74103a(9) =351352a(10) =1681640a(11) =8076015a(12) =39063800a(13) =189889216a(14) =924922052a(15) =4523125805a(16) =22183456842a(17) =108940260148a(18) =536282913395
External references
- oeis: A151076