A058414 Squares composed of digits {0,1,4}, not ending with zero.

1, 4, 144, 441, 1444, 10404, 40401, 1004004, 1100401, 4004001, 100040004, 114041041, 400040001, 414041104, 10000400004, 10110101401, 40000400001, 41011110144, 141001001001, 414441100441, 1000004000004, 1041110041104, 4000004000001, 4011400111104, 100000040000004

Offset: 1

Author

Patrick De Geest, Nov 15 2000

Keywords

• nonn
• base

Links

• Patrick De Geest, Index to related sequences.
• Hisanori Mishima, Sporadic tridigital solutions.

Crossrefs

Cf. A058413.

Formula

a(n) = A058413(n)^2. - Elmo R. Oliveira, Jul 18 2025

Extensions

More terms added using A058413 by Elmo R. Oliveira, Jul 18 2025