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A091790 Palindromes obtained as the concatenation of three successive terms of A091789. 1
1221, 221122, 2112222112, 1222211221122221, 22112211222211222211221122, 211222211222211221122221122112222112222112, 12222112211222211221122221122221122112222112222112211222211221122221 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..7.

CROSSREFS

Cf. A091789.

Sequence in context: A233660 A015279 A179140 * A053655 A068262 A328991

Adjacent sequences:  A091787 A091788 A091789 * A091791 A091792 A091793

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Feb 18 2004

EXTENSIONS

More terms from Max Alekseyev, Sep 19 2009

STATUS

approved

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Last modified October 27 06:31 EDT 2021. Contains 348271 sequences. (Running on oeis4.)