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 A226368 #28 Mar 20 2024 02:56:15
%S A226368 2,6,36,44,52,60,72,88,112,116,136,140,152,184,288,292,320,352,388,
%T A226368 400,404,536,544,584,632,796,844,928,1072,1136
%N A226368 Numbers k such that Omega(k) = Omega(2^k + 1), where Omega = A001222 is the number of prime factors counted with multiplicity.
%C A226368 At the moment, the least candidate for a(31) is 1168 = 2^4 * 73; the entry for 2^1168 + 1 on factordb.com has 3 prime factors and 1 composite cofactor with 326 decimal digits. - _Lucas A. Brown_, Mar 19 2024
%F A226368 {k: A054992(k) = A001222(k)}.
%o A226368 (PARI) is(n)=bigomega(2^n+1)==bigomega(n) \\ _Charles R Greathouse IV_, Mar 18 2014
%Y A226368 Cf. A001222, A054992, A155900.
%K A226368 nonn,more,hard
%O A226368 1,1
%A A226368 _Irina Gerasimova_, Jun 05 2013
%E A226368 More terms from _Jon E. Schoenfield_, Sep 01 2013
%E A226368 a(29) added using factordb.com by _Daniel Suteu_, Jan 21 2023
%E A226368 a(30) added using factordb.com by _Lucas A. Brown_, Mar 19 2024