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

1,2

Links

Table of n, a(n) for n=1..25.

Patrick De Geest, Index to related sequences.

Hisanori Mishima, Sporadic tridigital solutions.

Formula

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

Crossrefs

Cf. A058413.

Sequence in context: A277948 A083688 A053899 * A053891 A053897 A017294

Adjacent sequences: A058411 A058412 A058413 * A058415 A058416 A058417

Keyword

nonn,base

Author

Patrick De Geest, Nov 15 2000

Extensions

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

Status

approved