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A231505
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a(n) = Sum_{i=0..n} digsum_3(i)^4, where digsum_3(i) = A053735(i).
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4
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0, 1, 17, 18, 34, 115, 131, 212, 468, 469, 485, 566, 582, 663, 919, 1000, 1256, 1881, 1897, 1978, 2234, 2315, 2571, 3196, 3452, 4077, 5373, 5374, 5390, 5471, 5487, 5568, 5824, 5905, 6161, 6786, 6802, 6883, 7139, 7220, 7476, 8101, 8357, 8982, 10278, 10359, 10615, 11240, 11496, 12121, 13417, 14042, 15338, 17739, 17755, 17836, 18092, 18173, 18429, 19054, 19310, 19935, 21231
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OFFSET
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0,3
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LINKS
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P. J. Grabner, P. Kirschenhofer, H. Prodinger and R. F. Tichy, On the moments of the sum-of-digits function, PDF, Applications of Fibonacci numbers, Vol. 5 (St. Andrews, 1992), Kluwer Acad. Publ., Dordrecht, 1993, pp. 263-271.
J.-L. Mauclaire and Leo Murata, On q-additive functions. I, Proc. Japan Acad. Ser. A Math. Sci., Vol. 59, No. 6 (1983), pp. 274-276.
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MATHEMATICA
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Accumulate @ Array[(Plus @@ IntegerDigits[#, 3])^4 &, 60, 0] (* Amiram Eldar, Jan 20 2022 *)
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PROG
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(PARI) a(n) = sum(i=0, n, sumdigits(i, 3)^4); \\ Michel Marcus, Sep 20 2017
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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STATUS
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approved
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