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), (0, 1, -1), (1, 0, 0), (1, 1, -1), (1, 1, 1)}.
A150595
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), (0, 1, -1), (1, 0, 0), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =107a(5) =446a(6) =1881a(7) =8092a(8) =35281a(9) =155332a(10) =689317a(11) =3077837a(12) =13822709a(13) =62370888a(14) =282595987a(15) =1284860299a(16) =5859939781a(17) =26800809480a(18) =122881479385a(19) =564677253173
External references
- oeis: A150595