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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A053955 Squares composed of digits {4,5,9}.

Original entry on oeis.org

4, 9, 49, 44944, 5555449, 545549449, 59554545444, 459949959549955449, 555444595959444995959495549444, 495555459949459999994555545994544549499995545449
Offset: 1

Views

Author

Patrick De Geest, Mar 15 2000

Keywords

Crossrefs

Cf. A053954.

Formula

a(n) = A053954(n)^2. - Elmo R. Oliveira, Jul 19 2025

Extensions

a(9)-a(10) from Mishima's webpage added by Max Alekseyev, May 18 2009
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