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 A023567 #14 Dec 28 2015 20:10:17
%S A023567 0,2,3,5,9,14,18,24,32,39,51,57,71,85,94,108,124,142,152,176,193,205,
%T A023567 229,249,271,295,315,336,364,386,408,444,468,490,526,561,583,617,663,
%U A023567 681,717,745,781,831,862,894,924,968,1006,1050,1100,1138,1174
%N A023567 Convolution of A023531 and primes.
%H A023567 Robert Israel, <a href="/A023567/b023567.txt">Table of n, a(n) for n = 1..10000</a>
%F A023567 a(n) = Sum_{i=0..n-1} A023531(n-i)*p(i+1) where p(i) is the i-th prime.
%p A023567 Primes:= select(isprime, [2,seq(i,i=3..1000,2)]):
%p A023567 seq(add(Primes[n - i*(i+3)/2],i=1..floor((sqrt(1+8*n)-3)/2)), n=2..nops(Primes)); # _Robert Israel_, Dec 28 2015
%o A023567 (PARI) vector(20,x,c=0;j=x;t=3;while(j>1,c+=prime(j-1);j-=t;t+=1);c)
%K A023567 nonn
%O A023567 1,2
%A A023567 _Clark Kimberling_
%E A023567 Corrected (term 781 was missing) by _Jeremy Gardiner_, Feb 05 2014