Main diagonal of A365991: the n-th term in the trajectory of n under the A185452 map.

Terms

a(0) =1a(1) =1a(2) =4a(3) =3a(4) =208a(5) =1a(6) =73a(7) =2a(8) =573a(9) =13a(10) =183a(11) =1a(12) =52a(13) =3583a(14) =4a(15) =3a(16) =108a(17) =6999a(18) =2a(19) =83a(20) =4974a(21) =13998a(22) =34177a(23) =3a(24) =378a(25) =208a(26) =108a(27) =34177a(28) =417208a(29) =8