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, 1, 1), (1, 0, -1), (1, 0, 0)}.
A150573
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, 1, 1), (1, 0, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =26a(4) =108a(5) =458a(6) =2020a(7) =9020a(8) =41153a(9) =189298a(10) =882129a(11) =4132643a(12) =19524463a(13) =92592779a(14) =441695421a(15) =2113051018a(16) =10151937294a(17) =48881656985a(18) =236120064485
External references
- oeis: A150573