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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
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listen;
history;
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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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MAPLE
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local d ;
convert(n, base, 3) ;
add(d^2, d=%) ;
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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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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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