cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A058428 Squares composed of digits {0,2,9}, not ending with zero.

Original entry on oeis.org

9, 2209, 29929, 299209, 2900209, 290200922209, 2999229009299090209220929, 9009222020020222999909020009, 9290090909029029202290909290992929, 22922009029909029220029029909020009, 22220990020022929092929022220290920900929
Offset: 1

Views

Author

Patrick De Geest, Nov 15 2000

Keywords

Crossrefs

Cf. A058427.

Formula

a(n) = A058427(n)^2. - Elmo R. Oliveira, Jul 16 2025

Extensions

a(10) from Herman Jamke (hermanjamke(AT)fastmail.fm), Mar 30 2008
a(11) from Mishima's website added by Elmo R. Oliveira, Jul 16 2025
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