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A284515
"Inside numbers". Pick a term "t" and one of its digits "d". Now jump to the right over d digits if "d" is odd, and to the left over d digits if "d" is even. Whatever the "d" you choose, you will stay on "t".
3
100, 1000, 1002, 1100, 1102, 10000, 10002, 10020, 10022, 10100, 10102, 10120, 10122, 11000, 11002, 11020, 11022, 11100, 11102, 11120, 11122, 30000, 30002, 30020, 30022, 30100, 30102, 30120, 30122, 31000, 31002, 31020, 31022, 31100, 31102, 31120, 31122, 100000, 100002, 100004, 100020, 100022, 100024, 100100, 100102, 100104, 100120
OFFSET
1,1
COMMENTS
The sequence is started with a(1) = 100 and always extended with the smallest integer not yet present and not leading to a contradiction.
LINKS
EXAMPLE
Pick the digit "1" of the first term, 100. This "1" says that you should jump over 1 digit to the right (as "1" is odd). You'll land on the second "0" of 100.
Pick the leftmost digit "0" of the same term, 100. This "0" says that you should jump over 0 digit to the left (as "0" is even). You slide (land) on the "1" of 100.
Pick the rightmost digit "0" of 100. This "0" says that you should jump over 0 digit to the left (as "0" is even). You slide (land) on the first "0" of 100.
We see that any of those possible three movements leaves you "inside" the chosen term "t".
CROSSREFS
Cf. A284591 (full inside numbers).
Sequence in context: A232657 A287027 A326638 * A068086 A115691 A066432
KEYWORD
nonn,base
AUTHOR
STATUS
approved