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), (0, 1, 1), (1, -1, 1), (1, 1, -1)}.
A150644
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), (0, 1, 1), (1, -1, 1), (1, 1, -1)}.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =27a(4) =118a(5) =522a(6) =2420a(7) =11289a(8) =53793a(9) =257362a(10) =1244961a(11) =6039808a(12) =29485738a(13) =144258235a(14) =708480043a(15) =3485227388a(16) =17187200327a(17) =84865641756a(18) =419743432518
External references
- oeis: A150644