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A006287
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Sum of squares of digits of ternary representation of n.
(Formerly M3194)
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5
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0, 1, 4, 1, 2, 5, 4, 5, 8, 1, 2, 5, 2, 3, 6, 5, 6, 9, 4, 5, 8, 5, 6, 9, 8, 9, 12, 1, 2, 5, 2, 3, 6, 5, 6, 9, 2, 3, 6, 3, 4, 7, 6, 7, 10, 5, 6, 9, 6, 7, 10, 9, 10, 13, 4, 5, 8, 5, 6, 9, 8, 9, 12, 5, 6, 9, 6, 7
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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0,3
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REFERENCES
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Jeffrey Shallit, personal communication.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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R. J. Mathar, Table of n, a(n) for n = 0..500
Michael Gilleland, Some Self-Similar Integer Sequences
Robert Walker, Self Similar Sloth Canon Number Sequences
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MAPLE
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A006287 := proc(n)
local d ;
convert(n, base, 3) ;
add(d^2, d=%) ;
end proc: # R. J. Mathar, Jun 13 2014
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MATHEMATICA
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Table[Total[IntegerDigits[n, 3]^2], {n, 0, 80}] (* Harvey P. Dale, Apr 23 2011 *)
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CROSSREFS
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Cf. A053735
Sequence in context: A188931 A125560 A046573 * A087225 A220182 A076064
Adjacent sequences: A006284 A006285 A006286 * A006288 A006289 A006290
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KEYWORD
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nonn,base
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AUTHOR
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N. J. A. Sloane.
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STATUS
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approved
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