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, 0, 1), (0, 1, 0), (0, 1, 1), (1, 1, -1)}.
A151094
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, 0, 1), (0, 1, 0), (0, 1, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =3a(2) =11a(3) =43a(4) =177a(5) =755a(6) =3303a(7) =14727a(8) =66641a(9) =305107a(10) =1410179a(11) =6568867a(12) =30799777a(13) =145214819a(14) =687917407a(15) =3272245311a(16) =15621109601a(17) =74807650147a(18) =359245134843
External references
- oeis: A151094