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, 0, 1), (0, 0, 1), (1, -1, 1), (1, 1, -1), (1, 1, 0)}.
A150663
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, 0, 1), (0, 0, 1), (1, -1, 1), (1, 1, -1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =29a(4) =127a(5) =578a(6) =2694a(7) =12777a(8) =61311a(9) =296687a(10) =1444610a(11) =7067651a(12) =34706412a(13) =170926789a(14) =843757686a(15) =4172911941a(16) =20669327222a(17) =102509183526a(18) =508927584984
External references
- oeis: A150663