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, 0, -1), (1, 0, 0), (1, 1, 1)}.
A150799
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, 0, -1), (1, 0, 0), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =31a(4) =132a(5) =571a(6) =2558a(7) =11558a(8) =53106a(9) =246055a(10) =1149293a(11) =5401809a(12) =25535590a(13) =121205166a(14) =577648827a(15) =2762264920a(16) =13245920358a(17) =63683755397a(18) =306888922378
External references
- oeis: A150799