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 A138690 #7 Dec 15 2015 14:04:23 %S A138690 60,65,81,105,177,225,345,417,585,897,1017,1425,1737,1905,2265,2865, %T A138690 3537,3777,4545,5097,5385,6297,6945,7977,9465,10257,10665,11505,11937, %U A138690 12825,16185,17217,18825,19377,22257,22857,24705,26625,27945,29985 %N A138690 Numbers of the form 56+p^2 (where p is a prime). %C A138690 56+p^2 is divisible by 3 for any prime p>3. - _M. F. Hasler_ %t A138690 Table[2*28 + Prime[p + 1]^2, {p, 0, 100}] %t A138690 Prime[Range[40]]^2+56 (* _Harvey P. Dale_, Dec 15 2015 *) %Y A138690 Cf. A138479, A138685, A138686, A138691, A138692, A138693, A138694, A007528, A138696, A138697, A138698, A138699, A138700. %K A138690 nonn %O A138690 1,1 %A A138690 _Artur Jasinski_, Mar 26 2008