Number of orbits of the group of units of Z/(n) acting naturally on the 4-subsets of Z/(n).

Terms

a(0) =1a(1) =2a(2) =9a(3) =7a(4) =24a(5) =24a(6) =56a(7) =34a(8) =151a(9) =62a(10) =173a(11) =187a(12) =264a(13) =151a(14) =530a(15) =218a(16) =679a(17) =528a(18) =737a(19) =405a(20) =1558a(21) =638a(22) =1256a(23) =1002a(24) =1871a(25) =852a(26) =3567a(27) =1053a(28) =2472a(29) =2109