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A102815 "False so far" sequence. 0
11, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 101 (list; graph; refs; listen; history; text; internal format)
OFFSET

11,1

COMMENTS

The last digit of a(n) is regarded as a glyph and the preceding digits as a number. So "11" reads [one "1"] and "20" [two "0"] - which are both false statements here: there is not one "1" glyph so far in the sequence when [11] is read, but two; and there are not two "0" glyph when [20] is read, but only one. The sequence is built with [a(n+1)-a(n)] minimal and a(n+1) always "false so far". This explains why the sequence doesn't begin with [10]: its statement would be true.

After integer [20] the sequence matches A000027 without [100] -- because [100] would be "true so far".

[This seems to imply that the sequence contains all numbers >= 20 except 100. - N. J. A. Sloane, Aug 22 2011]

LINKS

Table of n, a(n) for n=11..92.

CROSSREFS

Cf. A102357.

Sequence in context: A257401 A283903 A063589 * A105957 A105958 A124250

Adjacent sequences:  A102812 A102813 A102814 * A102816 A102817 A102818

KEYWORD

base,easy,nonn

AUTHOR

Eric Angelini, Feb 26 2005

STATUS

approved

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Last modified December 9 13:50 EST 2019. Contains 329877 sequences. (Running on oeis4.)