A050628 a(1) = 1; a(n+1) is next smallest nontrivial square containing a(n) as a substring.

1, 16, 169, 56169, 36156169, 13361561690409, 42133615616904090751725289

Offset: 1

Author

Patrick De Geest, Jul 15 1999

Keywords

• nonn
• base
• more

Crossrefs

Cf. A050629, A048557, A050630, A050632, A050634.

Formula

a(n) = A050629(n)^2.

Extensions

a(7) from Max Alekseyev, Feb 15 2012