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, 0, 1), (-1, 1, -1), (-1, 1, 0), (1, 0, 0)}.
A148532
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, 0, 1), (-1, 1, -1), (-1, 1, 0), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =5a(4) =19a(5) =39a(6) =165a(7) =377a(8) =1675a(9) =4079a(10) =18697a(11) =47563a(12) =222459a(13) =584011a(14) =2770685a(15) =7449705a(16) =35708087a(17) =97825139a(18) =472520197a(19) =1314174063a(20) =6385336303a(21) =17980498927a(22) =87768137549a(23) =249725121217
External references
- oeis: A148532