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, 0), (1, 0, -1), (1, 0, 1), (1, 1, 1)}.
A150957
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, 0), (1, 0, -1), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =35a(4) =161a(5) =700a(6) =3357a(7) =15383a(8) =74611a(9) =350480a(10) =1717704a(11) =8204529a(12) =40391420a(13) =194906064a(14) =963492418a(15) =4684861044a(16) =23210210568a(17) =113448109561a(18) =563206675296
External references
- oeis: A150957