Number of distributive lattices; also number of paths with n turns when light is reflected from 11 glass plates.
A030115
Number of distributive lattices; also number of paths with n turns when light is reflected from 11 glass plates.
Terms
- a(0) =1a(1) =11a(2) =66a(3) =506a(4) =3641a(5) =26818a(6) =196119a(7) =1437799a(8) =10532302a(9) =77173602a(10) =565424068a(11) =4142793511a(12) =30353430420a(13) =222394369223
External references
- oeis: A030115