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, 0, 1), (1, 0, -1), (1, 0, 0), (1, 1, 0)}.
A150365
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, 0, 1), (1, 0, -1), (1, 0, 0), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =93a(5) =356a(6) =1533a(7) =6323a(8) =28181a(9) =121468a(10) =553175a(11) =2454032a(12) =11342113a(13) =51341090a(14) =239851262a(15) =1101887943a(16) =5189868066a(17) =24112416255a(18) =114298452653a(19) =535738501325
External references
- oeis: A150365