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), (1, 0, -1), (1, 0, 1), (1, 1, 1)}.
A150961
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), (1, 0, -1), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =35a(4) =165a(5) =726a(6) =3505a(7) =16188a(8) =79185a(9) =374583a(10) =1845761a(11) =8859888a(12) =43838438a(13) =212462673a(14) =1054088633a(15) =5142459739a(16) =25560670952a(17) =125293685976a(18) =623588353158
External references
- oeis: A150961