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), (-1, 1, 1), (0, 1, 1), (1, 0, -1), (1, 1, 1)}.
A150839
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), (-1, 1, 1), (0, 1, 1), (1, 0, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =32a(4) =137a(5) =608a(6) =2756a(7) =12649a(8) =58958a(9) =276653a(10) =1307588a(11) =6218901a(12) =29702158a(13) =142408409a(14) =685202495a(15) =3305575314a(16) =15985832063a(17) =77479270047a(18) =376201769276
External references
- oeis: A150839