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 A230833 #8 Oct 31 2013 04:14:58 %S A230833 0,1,9,20,89,177,273,374,485,666,1275,1894,2583,3391,4209,5097,6003, %T A230833 6919,7905,8906,10017,11708,13589,15550,21559,27678,34377,41266,48235, %U A230833 56243,64361,73059,81947,90915,99921,109037 %N A230833 Sum of the first n strobogrammatic numbers. %D A230833 G. L. Honaker, Jr., Pentagrammic Decryption, unpublished. %H A230833 Wikipedia, <a href="https://en.wikipedia.org/wiki/Strobogrammatic_number">Strobogrammatic number</a> %e A230833 a(10) = 666 because 0+1+8+11+69+88+96+101+111+181 = 666. %Y A230833 Cf. partial sums of A000787. %K A230833 nonn,base,easy %O A230833 1,3 %A A230833 _G. L. Honaker, Jr._, Oct 31 2013