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, 0), (-1, 1, 0), (1, -1, -1), (1, 0, 0)}.
A148506
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, 0), (-1, 1, 0), (1, -1, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =5a(4) =17a(5) =34a(6) =121a(7) =275a(8) =1027a(9) =2590a(10) =10031a(11) =27276a(12) =108111a(13) =309217a(14) =1245407a(15) =3700035a(16) =15109579a(17) =46351554a(18) =191582849a(19) =603772290a(20) =2520070013a(21) =8119770391a(22) =34161939771a(23) =112140631822a(24) =475080016603
External references
- oeis: A148506