

A003100


Decimal Gray code for n.
(Formerly M0486)


9



0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 19, 18, 17, 16, 15, 14, 13, 12, 11, 10, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 39, 38, 37, 36, 35, 34, 33, 32, 31, 30, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 59, 58, 57, 56, 55, 54, 53, 52, 51, 50, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 79, 78, 77
(list;
graph;
refs;
listen;
history;
text;
internal format)



OFFSET

0,3


COMMENTS

This permutation of the nonnegative integers is not selfinverse, as previously claimed. The first exception is a(100) = 190, but a(190) = 109.  Franklin T. AdamsWatters, Mar 05 2010


REFERENCES

M. Gardner, Knotted Doughnuts and Other Mathematical Entertainments. Freeman, NY, 1986, p. 18.
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).


LINKS



MAPLE

local s, i:
s:=[op(convert(n, base, 10)), 0]:
add(piecewise(s[i+1] mod 2=0, s[i], 9s[i])*10^(i1), i=1..nops(s)1) :
end proc:
seq(A003100(j), j=0..100); # Pab Ter, Oct 14 2005


CROSSREFS



KEYWORD



AUTHOR



EXTENSIONS

More terms from Pab Ter (pabrlos2(AT)yahoo.com), Oct 14 2005


STATUS

approved



