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 A143932 #9 Nov 06 2013 13:12:29 %S A143932 3,2,3,97,241,241,1201,3361,5569,61441,240769,915049,240769,17302321, %T A143932 7076521,49186201,2100735289,1074527281,23971813321,32354445841, %U A143932 68820869329,2992426816129,26238323995129,104071698229321 %N A143932 a(n) = smallest positive prime number of the form x^2 - n! (where x is a positive integer). %C A143932 For smallest positive integers x see A143931. Prime x see A143933. %e A143932 a(1)=3 because 2^2 - 1! = 3; %e A143932 a(2)=2 because 2^2 - 2! = 2; %e A143932 a(3)=3 because 3^2 - 3! = 3; %e A143932 a(4)=97 because 11^2 - 4! = 97. %t A143932 b = {}; Do[k = Round[Sqrt[n! ]] + 1; While[ ! PrimeQ[k^2 - n! ], k++ ]; AppendTo[b, k^2-n! ], {n, 1, 50}]; b %Y A143932 Cf. A121926, A143931, A143933. %K A143932 nonn %O A143932 1,1 %A A143932 _Artur Jasinski_, Sep 05 2008