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, 1, 1), (1, 0, 1), (1, 1, -1), (1, 1, 1)}.
A150982
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, 1, 1), (1, 0, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =36a(4) =175a(5) =778a(6) =3845a(7) =17905a(8) =89001a(9) =424172a(10) =2113948a(11) =10209253a(12) =50948157a(13) =248113556a(14) =1239102385a(15) =6068403739a(16) =30319281508a(17) =149081622109a(18) =745044873005
External references
- oeis: A150982