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, 0), (-1, 1, -1), (0, 1, 0), (1, 0, 0), (1, 0, 1)}.
A151070
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, 0), (-1, 1, -1), (0, 1, 0), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =39a(4) =161a(5) =683a(6) =2981a(7) =13314a(8) =60227a(9) =275345a(10) =1272372a(11) =5924933a(12) =27748370a(13) =130690142a(14) =618564321a(15) =2938763011a(16) =14009587697a(17) =67002293485a(18) =321313356800
External references
- oeis: A151070