A053955 Squares composed of digits {4,5,9}.
4, 9, 49, 44944, 5555449, 545549449, 59554545444, 459949959549955449, 555444595959444995959495549444, 495555459949459999994555545994544549499995545449
Offset: 1
Links
- Patrick De Geest, Squares containing at most three distinct digits, Index entries for related sequences.
- Hisanori Mishima Squares consisted of 3 different digits.
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