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, 0), (1, -1, 1), (1, 1, -1), (1, 1, 0)}.
A149315
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, 0), (1, -1, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =1a(2) =4a(3) =11a(4) =50a(5) =179a(6) =844a(7) =3400a(8) =16351a(9) =70268a(10) =341854a(11) =1528459a(12) =7490503a(13) =34379761a(14) =169311818a(15) =791428328a(16) =3910978136a(17) =18525118321a(18) =91772597075a(19) =439023657803
External references
- oeis: A149315