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A004073 Start with a(1)=1; to get a(n) replace each i in a(n-1) with 12...i, then append n. 1
1, 12, 1123, 11121234, 1111211212312345, 11111211121121231121231234123456, 1111112111121112112123111211212311212312341121231234123451234567 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,2
COMMENTS
Digits sum to A000225.
LINKS
T. Kubo and R. Vakil, On Conway's recursive sequence, Discr. Math. 152 (1996), 225-252.
CROSSREFS
Sequence in context: A160010 A325906 A181718 * A109229 A112457 A091782
KEYWORD
nonn,base
AUTHOR
EXTENSIONS
The next term is too large to include.
STATUS
approved

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Last modified July 22 22:40 EDT 2024. Contains 374544 sequences. (Running on oeis4.)