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, 0, 1), (0, 1, 1), (1, 0, 0)}.
A151044
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, 0, 1), (0, 1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =3a(2) =9a(3) =33a(4) =129a(5) =516a(6) =2150a(7) =9129a(8) =39208a(9) =170844a(10) =751739a(11) =3329775a(12) =14854617a(13) =66658383a(14) =300429493a(15) =1359788478a(16) =6178043489a(17) =28156202058a(18) =128688253311a(19) =589725931525
External references
- oeis: A151044