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, 0, 0), (1, 0, 1), (1, 1, -1), (1, 1, 1)}.
A150975
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, 0, 0), (1, 0, 1), (1, 1, -1), (1, 1, 1)}.
Terms
- a(0) =1a(1) =2a(2) =9a(3) =36a(4) =166a(5) =728a(6) =3499a(7) =16156a(8) =78440a(9) =370333a(10) =1816782a(11) =8714657a(12) =42928422a(13) =207804895a(14) =1027877936a(15) =5011129138a(16) =24837782919a(17) =121657684315a(18) =604222879882
External references
- oeis: A150975