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A105958
Integers are written in the form abcd...n where "a" means "At position a in this integer there is a digit b"; "b" means: "at position b there is a digit c"; "c" means: "at position c there is a digit d"; ... and "n" means nothing. No repetitions are allowed (like in the integer 111).
0
11, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 212, 230, 231, 232, 233, 234, 235, 236, 237, 238, 239, 322, 2312, 2340, 2341, 2342, 2343, 2344, 2345, 2346, 2347, 2348, 2349, 2433, 4323, 23412, 23450, 23451, 23452, 23453, 23454, 23455, 23456, 23457, 23458
OFFSET
1,1
EXAMPLE
Integer 2433 reads like this:
"At position 2 there is a digit 4" -- which is true;
"At position 4 there is a digit 3" -- which is true again;
"At position 3 there is a digit 3" -- which is also true.
CROSSREFS
Sequence in context: A063589 A102815 A105957 * A124250 A124251 A279431
KEYWORD
base,easy,nonn
AUTHOR
Eric Angelini, Apr 28 2005
STATUS
approved