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, -1, 0)}.
A148259
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, -1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =14a(5) =32a(6) =109a(7) =299a(8) =1084a(9) =3139a(10) =11753a(11) =35842a(12) =137532a(13) =434036a(14) =1690951a(15) =5507642a(16) =21687826a(17) =72175581a(18) =287446781a(19) =973876954a(20) =3911669188a(21) =13451568636a(22) =54391647165a(23) =189561457959a(24) =770748855265
External references
- oeis: A148259