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, 0), (1, 1, 1)}.
A150913
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, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =32a(4) =145a(5) =614a(6) =2784a(7) =12620a(8) =58059a(9) =270181a(10) =1264034a(11) =5956457a(12) =28216807a(13) =134146037a(14) =640650720a(15) =3067452503a(16) =14732785393a(17) =70928275807a(18) =342192431351
External references
- oeis: A150913