A050629 a(n+1)^2 is next smallest nontrivial square containing a(n)^2 as a substring, initial term is 1.

1, 4, 13, 237, 6013, 3655347, 6491041181267

Offset: 1

Author

Patrick De Geest, Jul 15 1999

Keywords

• nonn
• base
• more

Crossrefs

Cf. A050628, A048558, A050631, A050633, A050635.

Formula

a(n) = sqrt(A050628(n)).

Extensions

a(7) from Max Alekseyev, Feb 15 2012