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, 1, -1), (1, 0, 1), (1, 1, -1), (1, 1, 1)}.
A150952
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, 1, -1), (1, 0, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =35a(4) =155a(5) =690a(6) =3171a(7) =14620a(8) =68671a(9) =323788a(10) =1538292a(11) =7342163a(12) =35208637a(13) =169337703a(14) =817064667a(15) =3952269649a(16) =19158906154a(17) =93050722532a(18) =452711595085
External references
- oeis: A150952