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, 0), (0, 0, 1), (1, -1, 0), (1, 1, -1), (1, 1, 0)}.
A150609
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, 0), (0, 0, 1), (1, -1, 0), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =111a(5) =474a(6) =2081a(7) =9331a(8) =42489a(9) =195793a(10) =910692a(11) =4268460a(12) =20134127a(13) =95477700a(14) =454802895a(15) =2174770738a(16) =10433966295a(17) =50205026645a(18) =242188473956
External references
- oeis: A150609