cp's OEIS Frontend

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.

A231675 a(n) = Sum_{i=0..n} digsum_6(i)^4, where digsum_6(i) = A053827(i).

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%I A231675 #9 Sep 04 2016 18:48:53
%S A231675 0,1,17,98,354,979,980,996,1077,1333,1958,3254,3270,3351,3607,4232,
%T A231675 5528,7929,8010,8266,8891,10187,12588,16684,16940,17565,18861,21262,
%U A231675 25358,31919,32544,33840,36241,40337,46898,56898,56899,56915,56996,57252,57877,59173,59189,59270,59526,60151,61447,63848,63929,64185,64810,66106,68507,72603,72859,73484,74780,77181
%N A231675 a(n) = Sum_{i=0..n} digsum_6(i)^4, where digsum_6(i) = A053827(i).
%D A231675 Grabner, P. J.; Kirschenhofer, P.; Prodinger, H.; Tichy, R. F.; On the moments of the sum-of-digits function. Applications of Fibonacci numbers, Vol. 5 (St. Andrews, 1992), 263-271, Kluwer Acad. Publ., Dordrecht, 1993.
%H A231675 Vincenzo Librandi, <a href="/A231675/b231675.txt">Table of n, a(n) for n = 0..1000</a>
%H A231675 J. Coquet, <a href="http://dx.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 A231675 J.-L. Mauclaire and Leo Murata, <a href="http://dx.doi.org/10.3792/pjaa.59.274">On q-additive functions</a>, I. Proc. Japan Acad. Ser. A Math. Sci. 59 (1983), no. 6, 274-276.
%H A231675 J.-L. Mauclaire and Leo Murata, <a href="http://dx.doi.org/10.3792/pjaa.59.441">On q-additive functions</a>, II. Proc. Japan Acad. Ser. A Math. Sci. 59 (1983), no. 9, 441-444.
%H A231675 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.
%t A231675 Accumulate[f[n_]:= n - 5 Sum[Floor[n/6^k], {k, n}]; Array[f, 100, 0]^4] (* _Vincenzo Librandi_, Sep 04 2016 *)
%Y A231675 Cf. A053827, A231672, A231673, A231674.
%K A231675 nonn,base
%O A231675 0,3
%A A231675 _N. J. A. Sloane_, Nov 13 2013