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, 0, 1), (1, 0, 0), (1, 0, 1), (1, 1, 0)}.
A151166
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, 0, 1), (1, 0, 0), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =12a(3) =47a(4) =210a(5) =917a(6) =4241a(7) =19289a(8) =91082a(9) =424450a(10) =2027095a(11) =9587202a(12) =46150620a(13) =220465569a(14) =1067112006a(15) =5134405566a(16) =24954205199a(17) =120707011116a(18) =588521772260
External references
- oeis: A151166