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), (0, 1, -1), (0, 1, 0), (1, 1, 0)}.
A150565
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), (0, 1, -1), (0, 1, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =26a(4) =107a(5) =455a(6) =1997a(7) =8960a(8) =40802a(9) =188190a(10) =876126a(11) =4110613a(12) =19409604a(13) =92128043a(14) =439257473a(15) =2102256709a(16) =10094370187a(17) =48608230113a(18) =234652253431
External references
- oeis: A150565