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, 0), (0, 1, -1), (0, 1, 0), (1, 0, 1)}.
A150276
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, 0), (0, 1, -1), (0, 1, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =6a(3) =23a(4) =88a(5) =352a(6) =1471a(7) =6229a(8) =26846a(9) =117199a(10) =516047a(11) =2293107a(12) =10253796a(13) =46099289a(14) =208317929a(15) =945090949a(16) =4303253468a(17) =19657172870a(18) =90040264031a(19) =413482527121
External references
- oeis: A150276