A053897 Squares composed of digits {1,4,5}.
1, 4, 144, 441, 1444, 115111441, 1551414544, 441411414544, 115414455444544, 41155551514151451441, 114515541511151545444, 5115115541555411411554441, 5411144145154411455544144144
Offset: 1
Links
- Patrick De Geest, Squares containing at most three distinct digits, Index entries for related sequences.
- Hisanori Mishima, Sporadic tridigital solutions.
- Author?, Source(txt)
Crossrefs
Cf. A053896.
Formula
a(n) = A053896(n)^2. - Elmo R. Oliveira, Jul 18 2025
Extensions
More terms from C. Ronaldo (aga_new_ac(AT)hotmail.com), Jan 04 2005
Two more terms from Jon E. Schoenfield, Sep 03 2006