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, 0), (0, 0, -1), (1, 0, 0), (1, 0, 1)}.
A150347
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, 0), (0, 0, -1), (1, 0, 0), (1, 0, 1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =23a(4) =90a(5) =358a(6) =1477a(7) =6200a(8) =26604a(9) =116243a(10) =514768a(11) =2296193a(12) =10337171a(13) =46899416a(14) =214406281a(15) =985457495a(16) =4549383778a(17) =21096316462a(18) =98247401199a(19) =459290585418
External references
- oeis: A150347