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, 0), (0, 0, 1), (0, 1, 0), (1, -1, 1), (1, 1, -1)}.
A150264
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, 0), (0, 0, 1), (0, 1, 0), (1, -1, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =22a(4) =88a(5) =372a(6) =1632a(7) =7350a(8) =33744a(9) =157188a(10) =740522a(11) =3519904a(12) =16851570a(13) =81150912a(14) =392687942a(15) =1907901166a(16) =9301268766a(17) =45476190968a(18) =222895010996
External references
- oeis: A150264