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 A060325 #20 Dec 15 2017 17:34:56 %S A060325 -3,-1,-1,16,-1,28,-1,40,101,-1,133,76,-1,88,197,221,-1,253,136,-1, %T A060325 301,160,341,554,196,-1,208,-1,220,1433,256,533,-1,1147,-1,613,637, %U A060325 328,677,701,-1,1483,-1,388,-1,2044,2164,448,-1,460,941,-1,1963,1013,1037,1061,-1,1093,556,-1,2299,3593,616,-1,628,3881 %N A060325 a(n) = n-th prime prime(n) subtracted from sum of all composites between prime(n) and prime(n-1). %H A060325 James Spahlinger, <a href="/A060325/b060325.txt">Table of n, a(n) for n = 2..1000</a> %F A060325 a(n) = A054265(n-1) - A065091(n-1). - _James Spahlinger_, Feb 20 2016 %e A060325 a(2) = 0 - 3 = -3. a(5) = (8+9+10) - 11 = 16. %t A060325 a[n_] := Total@Range[Prime[n - 1] + 1, Prime[n] - 1] - Prime[n]; Array[a,50,2] (* _James Spahlinger_, Feb 20 2016 *) %K A060325 easy,sign %O A060325 2,1 %A A060325 _Jason Earls_, Apr 10 2001 %E A060325 Corrected and extended by Larry Reeves (larryr(AT)acm.org), Apr 20 2001