Number of mutual-visibility sets in the n-crown graph.

Terms

a(0) =3a(1) =7a(2) =36a(3) =181a(4) =788a(5) =3395a(6) =14416a(7) =60287a(8) =248730a(9) =1015441a(10) =4114586a(11) =16589297a(12) =66672856a(13) =267436439a(14) =1071475836a(15) =4289870299a(16) =17168484878a(17) =68694203765a(18) =274822100086