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, 0, 1), (0, 1, 0), (1, 0, 1), (1, 1, -1)}.
A150296
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, 0, 1), (0, 1, 0), (1, 0, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =23a(4) =95a(5) =413a(6) =1837a(7) =8332a(8) =38319a(9) =178179a(10) =835948a(11) =3949638a(12) =18771191a(13) =89640475a(14) =429808964a(15) =2067877339a(16) =9977961063a(17) =48267091020a(18) =233997610418
External references
- oeis: A150296