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 A141394 #6 Jan 22 2014 06:00:26 %S A141394 1,5,15,21,42,126,210,330,495,715,1001,1295,5180,7252,9028,11356, %T A141394 14195,17535,22211,26887,45241,109871,2087549,3186259,5326355,7832875, %U A141394 164490375,308102375,403718875,634415375,794973005,11129622070,16694433105,22566503645 %N A141394 a(n) = RMS( A141393(0) through A141393(n) ). %H A141394 Giovanni Resta, <a href="/A141394/b141394.txt">Table of n, a(n) for n = 0..100</a> %e A141394 a(3) = 21 because first 4 terms of A141393 are 1,7,25,33 and sqrt(mean(1^2, 7^2, 25^2, 33^2)) = 21. %Y A141394 Cf. A141391, A141392, A141393, A140480. %K A141394 nonn %O A141394 0,2 %A A141394 _Andrew Weimholt_, Jun 29 2008 %E A141394 a(22)-a(33) from _Giovanni Resta_, Jan 22 2014