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, 1), (-1, 1, 1), (0, 0, -1), (1, 0, -1), (1, 0, 0)}.
A148395
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, 1), (-1, 1, 1), (0, 0, -1), (1, 0, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =16a(5) =53a(6) =194a(7) =678a(8) =2540a(9) =9864a(10) =39339a(11) =159002a(12) =650824a(13) =2696290a(14) =11362478a(15) =48339341a(16) =207535853a(17) =897905427a(18) =3913431910a(19) =17176437470a(20) =75847364805a(21) =336777968274
External references
- oeis: A148395