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, 1, 0), (0, 0, -1), (1, 0, 0), (1, 0, 1)}.
A150348
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, 1, 0), (0, 0, -1), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =90a(5) =360a(6) =1499a(7) =6342a(8) =27469a(9) =120993a(10) =540818a(11) =2437169a(12) =11077527a(13) =50743478a(14) =234115070a(15) =1086176473a(16) =5062613225a(17) =23695467983a(18) =111354116247a(19) =525172462808
External references
- oeis: A150348