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 A143708 #4 Mar 30 2012 18:52:27 %S A143708 1,128,1024,64,128,14641,14348907,5764801,2097152,32,130321,9765625, %T A143708 17179869184,64,625,4826809,512,20511149,116415321826934814453125, %U A143708 6103515625,4194304,2401,4052555153018976267,4194304,371293 %N A143708 (1, 2, 3, 2^2, 5, 2*3, 7, 2^3, 3^2, 2*5, 11, 2^2*3, 13, 2*7, 3*5,..) becomes (1^(2+3), 2^(2+5), 2^(3+7), 2^(3+3), 2^(2+5), 11^(2+2), 3^(13+2), 7^(3+5),..). %e A143708 a(8)=7^(3+5)=7^8=5764801. %e A143708 a(9)=2^(4+17)=2^21=2097152. %e A143708 a(10)=2^(3+2)=2^5=32. %e A143708 a(11)=19^(2+2)=19^4=130321. %e A143708 a(12)=5^(3+7)=5^10=9765625. %e A143708 a(13)=2^(11+23)=2^34=17179869184, %e A143708 etc. %Y A143708 Cf. A141287, A141261, A136735. %K A143708 nonn %O A143708 1,2 %A A143708 _Juri-Stepan Gerasimov_, Nov 13 2008 %E A143708 More terms from _R. J. Mathar_, Apr 18 2010