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), (0, 0, -1), (0, 1, 1), (1, 0, 1), (1, 1, 0)}.
A151189
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), (0, 0, -1), (0, 1, 1), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =51a(4) =232a(5) =1068a(6) =5038a(7) =23959a(8) =115138a(9) =556622a(10) =2705280a(11) =13203258a(12) =64641290a(13) =317385682a(14) =1561642298a(15) =7698967867a(16) =38015063016a(17) =187965810828a(18) =930489741852
External references
- oeis: A151189