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, 1, 1), (0, 1, -1), (1, 0, 0)}.
A148244
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, 1, 1), (0, 1, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =13a(5) =36a(6) =115a(7) =358a(8) =1190a(9) =3930a(10) =13395a(11) =46452a(12) =163827a(13) =581929a(14) =2087571a(15) =7561179a(16) =27583483a(17) =101265250a(18) =374447429a(19) =1393522831a(20) =5210820435a(21) =19569740853a(22) =73828142561a(23) =279648783033
External references
- oeis: A148244