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.

A053888 Numbers k such that k^2 contains only digits {1,2,9}.

Original entry on oeis.org

1, 3, 11, 173, 3161, 34827, 43923, 44623, 54123, 1108661, 9603239, 14832161, 9960980373, 1513668461761, 99961098929489127, 459556524411439511, 145303131149776986249167839
Offset: 1

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Author

Patrick De Geest, Mar 15 2000

Keywords

Crossrefs

Cf. A053889.

Extensions

More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005
One more term from Jon E. Schoenfield, Sep 03 2006
Two more terms from Mishima's webpage added by Max Alekseyev, Jun 17 2011
a(17) from Zhao Hui Du, Feb 29 2024