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 A181956 #12 Aug 03 2014 14:01:26
%S A181956 2,3,11,29,53,97,149,227,331,457,607,797,1019,1277,1579,1931,2333,
%T A181956 2767,3251,3803,4421,5087,5821,6637,7507,8461,9479,10589,11777,13063,
%U A181956 14419,15877,17431,19079,20849,22691,24659,26717,28901,31219,33623,36187,38833,41627
%N A181956 Smallest prime greater than n*(n+1)^2/2.
%H A181956 Charles R Greathouse IV, <a href="/A181956/b181956.txt">Table of n, a(n) for n = 0..10000</a>
%F A181956 a(n) ~ n^3 / 2. - _Charles R Greathouse IV_, Aug 03 2012
%e A181956 a(1)=2 because prime 2 > (0*(0+1)^2/2) = 0, a(2)=3 because prime 3 > (1*(1+1)^2/2) = 2, a(3)=11 because prime 11 > (2*(2+1)^2/2) = 9.
%t A181956 Table[NextPrime[n*(n+1)^2/2], {n, 0, 50}] (* _T. D. Noe_, Apr 03 2012 *)
%o A181956 (PARI) a(n)=nextprime(n*(n+1)^2/2+1) \\ _Charles R Greathouse IV_, Aug 03 2012
%Y A181956 Cf. A006002, A097050.
%K A181956 nonn
%O A181956 0,1
%A A181956 _Gerasimov Sergey_, Apr 03 2012