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, 1), (0, 1, -1), (1, 0, 0), (1, 1, 1)}.
A150464
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, 1), (0, 1, -1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =25a(4) =97a(5) =404a(6) =1693a(7) =7388a(8) =32505a(9) =145180a(10) =657113a(11) =2989105a(12) =13746349a(13) =63477990a(14) =294979025a(15) =1377542831a(16) =6455184517a(17) =30385998096a(18) =143414160901a(19) =679093203299
External references
- oeis: A150464