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, 1), (1, 0, -1), (1, 0, 1), (1, 1, 1)}.
A150934
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, 1), (1, 0, -1), (1, 0, 1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =33a(4) =155a(5) =652a(6) =3113a(7) =13874a(8) =66837a(9) =307272a(10) =1488777a(11) =6975715a(12) =33934993a(13) =161025010a(14) =785710159a(15) =3761589709a(16) =18397686843a(17) =88656750924a(18) =434438606787
External references
- oeis: A150934