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, 0, 0), (0, -1, 1), (0, 0, 1), (1, 1, -1), (1, 1, 0)}.
A150651
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, 0, 0), (0, -1, 1), (0, 0, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =28a(4) =118a(5) =517a(6) =2338a(7) =10779a(8) =50392a(9) =238290a(10) =1136736a(11) =5459706a(12) =26368937a(13) =127941671a(14) =623126153a(15) =3044479214a(16) =14914765582a(17) =73234215657a(18) =360298749816
External references
- oeis: A150651