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 A248344 #20 Nov 26 2014 14:00:45 %S A248344 2,3,5,7,17,23,41,47,73,79,89,97,113,137,167,193,223,233,257,281,313, %T A248344 353,359,401,409,433,439,449,457,521,577,593,601,617,727,761,809,839, %U A248344 857,929,953,977,1009,1087,1097,1193,1201,1217,1223,1361,1367,1433,1489,1553,1609,1697,1721 %N A248344 Primes of the form x^2 - 2^y. %C A248344 Primes in A051204. %e A248344 17 is in this sequence because 17 = 5^2 - 2^3 = 7^2 - 2^5 = 9^2 - 2^6 = 23^2 - 2^9. %Y A248344 Cf. A051204, A247763. %K A248344 nonn %O A248344 1,1 %A A248344 _Juri-Stepan Gerasimov_, Oct 05 2014 %E A248344 a(54) corrected by _Charles R Greathouse IV_, Nov 26 2014