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 A048621 #11 May 14 2017 11:47:18
%S A048621 0,1,1,2,2,3,2,3,4,5,4,5,5,6,5,6,5,6,5,6,7,8,6,7,8,9,10,11,10,11,8,9,
%T A048621 10,11,10,11,11,12,11,12,11,12,11,12,14,15,12,13,13,14,14,15,13,14,13,
%U A048621 14,15,16,14,15,15,16,14,15,15,16,15,16,16,17,14,15,15,16,17,18,18,19
%N A048621 a(n) = A001222(A001405(n)).
%H A048621 G. C. Greubel, <a href="/A048621/b048621.txt">Table of n, a(n) for n = 1..1000</a>
%F A048621 a(n) = A001222(A001405(n)).
%t A048621 Table[PrimeOmega[Binomial[n, Floor[n/2]]], {n, 1, 50}] (* _G. C. Greubel_, May 12 2017 *)
%o A048621 (PARI) for(n=1,100, print1(bigomega(binomial(n,floor(n/2))), ", ")) \\ _G. C. Greubel_, May 12 2017
%Y A048621 Cf. A001222, A001221, A046660, A034973, A034974.
%K A048621 nonn
%O A048621 1,4
%A A048621 _Labos Elemer_
%E A048621 Simpler name using formula by _Joerg Arndt_, May 14 2017