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, 1), (-1, 1, -1), (-1, 1, 1), (1, -1, -1), (1, 0, 0)}.
A148266
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, 1), (-1, 1, -1), (-1, 1, 1), (1, -1, -1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =4a(4) =14a(5) =33a(6) =121a(7) =341a(8) =1364a(9) =4118a(10) =17156a(11) =55195a(12) =235565a(13) =792216a(14) =3452019a(15) =12003317a(16) =53078631a(17) =189709685a(18) =848602623a(19) =3101364840a(20) =14005457308a(21) =52145063041a(22) =237321022029a(23) =897692005813
External references
- oeis: A148266