A134847 Smallest square number with exactly n zero digits whose square root does not contain any zero digits.

1024, 60025, 200704, 14040009, 600005025, 3906000004, 62000004004, 6000305000704, 40880000700009, 39000000020004, 60000500050500025, 249000000005004004, 6000000050052001009, 600201000902004000004, 800000000087008020001, 62000004003004008000004

Offset

1,1

Comments

a(26) <= 20000000000000000000005837591200400708766761.

For corresponding square roots and more information see A134846.

a(26) <= 240002009020200000020200002000000001. - Giovanni Resta, Jun 28 2019

Links

Giovanni Resta, Table of n, a(n) for n = 1..19

Example

a(1) = 1024 because 1024 is the smallest square with one zero whose square root has no zero: 32.

Crossrefs

Cf. A134843, A134844, A134845, A134846.

Sequence in context: A056587 A321819 A231309 * A066371 A236216 A264002

Adjacent sequences: A134844 A134845 A134846 * A134848 A134849 A134850

Keyword

nonn,base

Author

Artur Jasinski, Nov 13 2007

Extensions

Edited and a(11)-a(13) added by Klaus Brockhaus, Nov 20 2007

a(14)-a(16) from Giovanni Resta, Jun 28 2019

Status

approved