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, 1, 0), (0, 0, -1), (1, 0, 1), (1, 1, 1)}.
A150949
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, 1, 0), (0, 0, -1), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =35a(4) =153a(5) =684a(6) =3130a(7) =14413a(8) =67611a(9) =318757a(10) =1512407a(11) =7216348a(12) =34591322a(13) =166310839a(14) =802228575a(15) =3880007130a(16) =18806256468a(17) =91330565750a(18) =444334925781
External references
- oeis: A150949