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), (-1, 0, 1), (0, 1, -1), (1, 0, 0), (1, 1, 0)}.
A150429
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), (-1, 0, 1), (0, 1, -1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =97a(5) =398a(6) =1709a(7) =7516a(8) =33623a(9) =152804a(10) =702023a(11) =3257118a(12) =15220657a(13) =71618594a(14) =338740110a(15) =1609684691a(16) =7680446968a(17) =36772243184a(18) =176594075393a(19) =850392064044
External references
- oeis: A150429