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), (-1, 0, 0), (-1, 1, 1), (1, 0, 0), (1, 0, 1)}.
A150667
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), (-1, 0, 0), (-1, 1, 1), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =24a(4) =104a(5) =360a(6) =1624a(7) =6048a(8) =27936a(9) =108864a(10) =510464a(11) =2051456a(12) =9719808a(13) =39947648a(14) =190710272a(15) =797306880a(16) =3828298240a(17) =16222254080a(18) =78243672064a(19) =335196917760
External references
- oeis: A150667