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, -1), (-1, 1, 0), (1, 0, 1), (1, 1, 0)}.
A150691
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, -1), (-1, 1, 0), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =2a(2) =8a(3) =26a(4) =118a(5) =438a(6) =2068a(7) =8171a(8) =39304a(9) =161039a(10) =782876a(11) =3285331a(12) =16076106a(13) =68622980a(14) =337263559a(15) =1458225675a(16) =7188944802a(17) =31396103454a(18) =155132880839a(19) =683008513890
External references
- oeis: A150691