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), (1, 0, 1), (1, 1, -1), (1, 1, 0)}.
A150852
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), (1, 0, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =32a(4) =140a(5) =628a(6) =2887a(7) =13510a(8) =63956a(9) =305600a(10) =1471081a(11) =7120355a(12) =34625821a(13) =169011611a(14) =827494683a(15) =4062062757a(16) =19983319943a(17) =98490098421a(18) =486190982884
External references
- oeis: A150852