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, 0, 1), (0, -1, 1), (0, 0, 1), (1, 1, -1), (1, 1, 0)}.
A150662
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, 0, 1), (0, -1, 1), (0, 0, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =29a(4) =125a(5) =562a(6) =2597a(7) =12210a(8) =58097a(9) =279086a(10) =1350199a(11) =6567293a(12) =32080325a(13) =157251140a(14) =772958093a(15) =3808104405a(16) =18796934995a(17) =92929725778a(18) =460047738803
External references
- oeis: A150662