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), (0, 0, -1), (0, 1, -1), (1, 0, 0), (1, 1, 1)}.
A150616
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), (0, 0, -1), (0, 1, -1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =113a(5) =482a(6) =2133a(7) =9568a(8) =43593a(9) =200918a(10) =934895a(11) =4381213a(12) =20654621a(13) =97890814a(14) =466006657a(15) =2226648093a(16) =10674149243a(17) =51320330500a(18) =247371026099
External references
- oeis: A150616