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), (0, -1, 1), (1, 1, -1), (1, 1, 0)}.
A149289
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), (0, -1, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =44a(5) =168a(6) =684a(7) =2917a(8) =12434a(9) =54952a(10) =244134a(11) =1100482a(12) =5016090a(13) =23007212a(14) =106468234a(15) =495348425a(16) =2317147904a(17) =10893890888a(18) =51410034690a(19) =243569360712
External references
- oeis: A149289