Number of connected functions on n points with a loop of length 7.

Terms

a(0) =1a(1) =1a(2) =5a(3) =21a(4) =80a(5) =285a(6) =970a(7) =3192a(8) =10236a(9) =32197a(10) =99743a(11) =305276a(12) =925342a(13) =2783012a(14) =8316994a(15) =24726109a(16) =73195582a(17) =215911767a(18) =635028054a(19) =1863156727a(20) =5455350409a(21) =15946267328a(22) =46545783253a(23) =135702643984a(24) =395246786050