|
| |
|
|
A006287
|
|
Sum of squares of digits of ternary representation of n.
(Formerly M3194)
|
|
5
|
|
|
|
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)
|
|
|
|
OFFSET
|
0,3
|
|
|
REFERENCES
|
Jeffrey Shallit, personal communication.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
|
|
|
LINKS
|
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
|
|
|
MAPLE
|
A006287 := proc(n)
local d ;
convert(n, base, 3) ;
add(d^2, d=%) ;
end proc: # R. J. Mathar, Jun 13 2014
|
|
|
MATHEMATICA
|
Table[Total[IntegerDigits[n, 3]^2], {n, 0, 80}] (* Harvey P. Dale, Apr 23 2011 *)
|
|
|
CROSSREFS
|
Cf. A053735
Sequence in context: A188931 A125560 A046573 * A087225 A343404 A220182
Adjacent sequences: A006284 A006285 A006286 * A006288 A006289 A006290
|
|
|
KEYWORD
|
nonn,base
|
|
|
AUTHOR
|
N. J. A. Sloane.
|
|
|
STATUS
|
approved
|
| |
|
|
