This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A122408 #8 Aug 31 2019 15:33:10 %S A122408 1,2,4,6,8,16,32,40,64,128,224,256,264,512,1024,2048,4096,5632,8192, %T A122408 16384,26624,32768,65536,72192,131072,154752,262144,524288,557056, %U A122408 1048576,2072576,2097152,2490368,4194304,5537792,8388608,10518528,16777216,33554432,48234496 %N A122408 Numbers n such that A067824(n) = n. %H A122408 Amiram Eldar, <a href="/A122408/b122408.txt">Table of n, a(n) for n = 1..100</a> %F A122408 A002033(a(n)) = A074206(a(n)) = a(n)/2. %F A122408 A067824(a(n)) = a(n). %e A122408 m=40, the proper divisors of 40 are 1, 2, 4, 5, 8, 10 and 20: %e A122408 A067824(40) = 1+Sum(A067824(d): 1<=d<40) = 1+(1+2+4+2+8+6+16) = 40, therefore 40 is a term. %Y A122408 A000079 is a subsequence. %Y A122408 Cf. A002033, A067824, A074206, A163272. %K A122408 nonn %O A122408 1,2 %A A122408 _Reinhard Zumkeller_, Sep 03 2006 %E A122408 More terms from _Amiram Eldar_, Aug 31 2019