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, 0, 1), (0, 1, 1), (1, -1, 1), (1, 1, -1), (1, 1, 0)}.
A150896
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, 0, 1), (0, 1, 1), (1, -1, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =34a(4) =155a(5) =726a(6) =3473a(7) =16808a(8) =82057a(9) =402924a(10) =1986906a(11) =9827983a(12) =48725833a(13) =241998673a(14) =1203513633a(15) =5991595084a(16) =29853138232a(17) =148839744996a(18) =742458547822
External references
- oeis: A150896