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), (0, 0, 1), (0, 1, 0), (1, 0, 1), (1, 1, 0)}.
A151244
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), (0, 0, 1), (0, 1, 0), (1, 0, 1), (1, 1, 0)}.
Terms
- a(0) =1a(1) =4a(2) =16a(3) =70a(4) =322a(5) =1498a(6) =7094a(7) =34036a(8) =164048a(9) =796202a(10) =3885290a(11) =19002928a(12) =93264752a(13) =459007438a(14) =2262036586a(15) =11169376970a(16) =55240445346a(17) =273433650434
External references
- oeis: A151244