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 A166071 #3 Mar 31 2012 20:35:59
%S A166071 146,148,150,152,154,156,158,160,162,164,166,168,170,172,234,238,242,
%T A166071 246,250,254,258,262,266,270,292,298,304,310,316,322,332,340
%N A166071 Sum of the atomic numbers in the n-th column of the Janet table of the first 120 elements.
%H A166071 Albert Tarantola, <a href="http://www.ipgp.fr/~tarantola/Files/Professional/Mendeleev/">PSE of Elements (Janet form)</a>.
%H A166071 Anonymous, <a href="http://www.webelements.com/nexus/?q=node/981">Janet periodic table</a>, Web Elements Chemistry Nexus
%F A166071 sum_{n=1..32} a(n) = A000217(120).
%e A166071 a(1) = 57 (La) +89 (Ac).
%e A166071 a(14) = 70 (Yb) +102 (No).
%e A166071 a(15) = 21 (Sc) +39 (Y) +71 (Lu) +103 (Lr).
%e A166071 a(24) = 30 (Zn) +48 (Cd) +80 (Hg) +112.
%e A166071 a(25) = 5+13+31+49+81+113.
%e A166071 a(31) = 1 (H) +3 (Li) +11 (Na) +19 (K) +37 (Rb) +55 (Cs) +187 (Fr) +119.
%Y A166071 Cf. A137325, A137583, A138102
%K A166071 nonn,less,fini,full
%O A166071 1,1
%A A166071 _Paul Curtz_, Oct 06 2009
%E A166071 a(32) corrected, tutorial description of the PSE and historical anectodes removed. - _R. J. Mathar_, Oct 07 2009