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 A231683 #7 Sep 20 2017 11:46:04
%S A231683 0,1,17,98,354,979,2275,4676,4677,4693,4774,5030,5655,6951,9352,13448,
%T A231683 13464,13545,13801,14426,15722,18123,22219,28780,28861,29117,29742,
%U A231683 31038,33439,37535,44096,54096,54352,54977,56273,58674,62770,69331,79331,93972,94597,95893,98294,102390,108951,118951,133592,154328,155624,158025,162121,168682,178682,193323,214059
%N A231683 a(n) = Sum_{i=0..n} digsum_8(i)^4, where digsum_8(i) = A053829(i).
%H A231683 Jean Coquet, <a href="https://doi.org/10.1016/0022-314X(86)90067-3">Power sums of digital sums</a>, J. Number Theory 22 (1986), no. 2, 161-176.
%H A231683 P. J. Grabner, P. Kirschenhofer, H. Prodinger, R. F. Tichy, <a href="http://math.sun.ac.za/~hproding/abstract/abs_80.htm">On the moments of the sum-of-digits function</a>, <a href="http://math.sun.ac.za/~hproding/pdffiles/st_andrews.pdf">PDF</a>, Applications of Fibonacci numbers, Vol. 5 (St. Andrews, 1992), 263-271, Kluwer Acad. Publ., Dordrecht, 1993.
%H A231683 J.-L. Mauclaire, Leo Murata, <a href="https://dx.doi.org/10.3792/pjaa.59.274">On q-additive functions. I</a>, Proc. Japan Acad. Ser. A Math. Sci. 59 (1983), no. 6, 274-276.
%H A231683 J.-L. Mauclaire, Leo Murata, <a href="https://dx.doi.org/10.3792/pjaa.59.441">On q-additive functions. II</a>, Proc. Japan Acad. Ser. A Math. Sci. 59 (1983), no. 9, 441-444.
%H A231683 J. R. Trollope, <a href="http://www.jstor.org/stable/2687954">An explicit expression for binary digital sums</a>, Math. Mag. 41 1968 21-25.
%o A231683 (PARI) a(n) = sum(i=0, n, sumdigits(i, 8)^4); \\ _Michel Marcus_, Sep 20 2017
%Y A231683 Cf. A053829, A231680, A231681, A231682.
%K A231683 nonn,base
%O A231683 0,3
%A A231683 _N. J. A. Sloane_, Nov 13 2013