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), (-1, 1, 1), (0, 1, -1), (0, 1, 0), (1, -1, 0)}.
A148360
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), (-1, 1, 1), (0, 1, -1), (0, 1, 0), (1, -1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =5a(4) =15a(5) =46a(6) =156a(7) =550a(8) =2012a(9) =7606a(10) =29449a(11) =116379a(12) =468297a(13) =1911897a(14) =7907479a(15) =33074959a(16) =139692623a(17) =595163091a(18) =2555275568a(19) =11046348101a(20) =48049939121a(21) =210177221656a(22) =924005069621
External references
- oeis: A148360