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, 0, 1), (0, 1, -1), (1, 0, 1)}.
A150331
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, 0, 1), (0, 1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =22a(4) =88a(5) =335a(6) =1400a(7) =5748a(8) =24663a(9) =105721a(10) =462559a(11) =2031230a(12) =9019371a(13) =40236527a(14) =180707876a(15) =814986092a(16) =3692530833a(17) =16788729777a(18) =76594103804a(19) =350439481630
External references
- oeis: A150331