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A067818
Start with 1. To get a(n+1), describe a(n) in terms of the number of 0's, 1's, 2's,...,9's it has. Do not ignore leading 0's in the computation, but ignore them when listing the terms.
0
1, 110203040506070809, 100211213141516171819, 201012213141516171819, 20913213141516171819, 10812223141516171829, 10714213141516172819, 10812213241516271819, 10714213141516172819, 10812213241516271819, 10714213141516172819, 10812213241516271819
OFFSET
1,2
COMMENTS
If leading 0's are not included in the computation, the sequence becomes constant after the third term.
Including leading 0's, the sequence oscillates between 10714213141516172819 and 10812213241516271819 from a(7) onward. - Sean A. Irvine, Jan 08 2024
REFERENCES
Pickover, C. "Wonders of Numbers", Oxford Univ. Press, 2001.
LINKS
C. A. Pickover, "Wonders of Numbers, Adventures in Mathematics, Mind and Meaning," Zentralblatt review
EXAMPLE
1 has 0 0's, 1 1's, 0 2's, 0 3's, 0 4's, 0 5's, 0 6's, 0 7's, 0 8's, 0 9's, so the term following 1 is 00110203040506070809. Ignore the two leading zeros when listing this term, but include them in the computation of the third term. The second term has 10 0's, 2 1's, 1 2's, 1 3's, 1 4's, 1 5's, 1 6's, 1 7's, 1 8's, 1 9's, so the third term is 100211213141516171819.
CROSSREFS
Sequence in context: A128857 A357515 A246111 * A262560 A095433 A099727
KEYWORD
base,easy,nonn
AUTHOR
Joseph L. Pe, Feb 08 2002
EXTENSIONS
More terms from Sean A. Irvine, Jan 08 2024
STATUS
approved