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, 1), (0, 0, 1), (0, 1, 1), (1, 1, 0)}.
A151067
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, 1), (0, 0, 1), (0, 1, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =3a(2) =10a(3) =39a(4) =158a(5) =651a(6) =2763a(7) =11915a(8) =51832a(9) =227963a(10) =1010967a(11) =4508263a(12) =20218248a(13) =91123461a(14) =412253390a(15) =1871732613a(16) =8525963254a(17) =38943324921a(18) =178323541213a(19) =818456588811
External references
- oeis: A151067