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, 0), (0, 0, 1), (1, 0, -1), (1, 1, 0)}.
A150403
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, 0), (0, 0, 1), (1, 0, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =24a(4) =93a(5) =370a(6) =1527a(7) =6463a(8) =27808a(9) =121664a(10) =538341a(11) =2406850a(12) =10855723a(13) =49307861a(14) =225460272a(15) =1036492265a(16) =4788796538a(17) =22222484314a(18) =103522304800a(19) =483981651618
External references
- oeis: A150403