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, 1, -1), (-1, 1, 0), (1, -1, 0), (1, 0, 1)}.
A148753
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, 1, -1), (-1, 1, 0), (1, -1, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =7a(4) =28a(5) =77a(6) =326a(7) =1028a(8) =4508a(9) =15255a(10) =68632a(11) =243837a(12) =1114866a(13) =4107946a(14) =19004015a(15) =71988788a(16) =336043828a(17) =1301048142a(18) =6116392715a(19) =24103744170a(20) =113963361244a(21) =455754834422
External references
- oeis: A148753