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), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.
A150901
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), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =34a(4) =160a(5) =754a(6) =3666a(7) =17828a(8) =87802a(9) =432614a(10) =2144172a(11) =10631688a(12) =52874430a(13) =263050196a(14) =1310789336a(15) =6533453750a(16) =32594854752a(17) =162645656080a(18) =812023451302
External references
- oeis: A150901