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), (0, 0, 1), (0, 1, -1), (1, 0, -1), (1, 1, 0)}.
A150463
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), (0, 0, 1), (0, 1, -1), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =97a(5) =398a(6) =1679a(7) =7288a(8) =32223a(9) =144618a(10) =657031a(11) =3014433a(12) =13946921a(13) =64978210a(14) =304552559a(15) =1434806969a(16) =6790079675a(17) =32260223432a(18) =153804362391a(19) =735548808541
External references
- oeis: A150463