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A014889
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n is equal to the number of 5s in all numbers <= n written in base 7.
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0
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761664, 817499, 817500, 817507, 817508, 819609, 823543, 1585207, 1641042, 1641043, 1641050, 1641051, 1643152, 1647086, 2408750, 2464585, 2464586, 2464593, 2464594, 2466695, 2470629, 3232293, 3288128, 3288129, 3288136, 3288137, 3290238, 3294172, 4055836, 4111671, 4111672, 4111679, 4111680, 4113781
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OFFSET
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1,1
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LINKS
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Table of n, a(n) for n=1..34.
Index entries for linear recurrences with constant coefficients, signature (1, 0, 0, 0, 0, 0, 1, -1).
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FORMULA
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a(n) = a(n-1) + a(n-7) - a(n-8) for 8 < n <= 34. - Chai Wah Wu, Jun 06 2016
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MATHEMATICA
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LinearRecurrence[{1, 0, 0, 0, 0, 0, 1, -1}, {761664, 817499, 817500, 817507, 817508, 819609, 823543, 1585207}, 34] (* Harvey P. Dale, Apr 14 2020 *)
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CROSSREFS
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Cf. A014778.
Sequence in context: A137468 A183825 A254074 * A014888 A234990 A043673
Adjacent sequences: A014886 A014887 A014888 * A014890 A014891 A014892
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KEYWORD
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nonn,base,fini,full
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AUTHOR
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Olivier Gérard
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EXTENSIONS
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List proved complete by Hugo van der Sanden (cf. A014886).
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STATUS
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approved
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