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, 1), (-1, 1, -1), (1, -1, -1), (1, 0, 1)}.
A148544
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, 1), (-1, 1, -1), (1, -1, -1), (1, 0, 1)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =5a(4) =19a(5) =45a(6) =173a(7) =469a(8) =1895a(9) =5639a(10) =22987a(11) =72543a(12) =303393a(13) =997591a(14) =4202367a(15) =14311543a(16) =61189337a(17) =213097925a(18) =917264035a(19) =3269434741a(20) =14199987201a(21) =51345567007a(22) =224376013183a(23) =824557694411
External references
- oeis: A148544