Main diagonal of A368179: the n-th term in the trajectory of n under the A006368 map.

Terms

a(0) =0a(1) =1a(2) =2a(3) =2a(4) =5a(5) =5a(6) =9a(7) =4a(8) =51a(9) =6a(10) =34a(11) =57a(12) =48a(13) =38a(14) =132a(15) =48a(16) =167a(17) =32a(18) =205a(19) =167a(20) =130a(21) =106a(22) =167a(23) =243a(24) =50a(25) =159a(26) =125a(27) =369a(28) =297a(29) =119