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, 0), (-1, 1, -1), (-1, 1, 1), (1, 0, 0)}.
A148533
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, 0), (-1, 1, -1), (-1, 1, 1), (1, 0, 0)}.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =5a(4) =19a(5) =39a(6) =165a(7) =377a(8) =1703a(9) =4163a(10) =19381a(11) =49477a(12) =234493a(13) =617473a(14) =2959003a(15) =7974541a(16) =38523859a(17) =105732111a(18) =513864265a(19) =1431231201a(20) =6988798153a(21) =19703019965a(22) =96571223019a(23) =275040849031
External references
- oeis: A148533