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

1,2

Links

Table of n, a(n) for n=1..7.

Formula

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

Crossrefs

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

Sequence in context: A132512 A203221 A284700 * A348140 A344513 A219707

Adjacent sequences: A050626 A050627 A050628 * A050630 A050631 A050632

Keyword

nonn,base,more

Author

Patrick De Geest, Jul 15 1999

Extensions

a(7) from Max Alekseyev, Feb 15 2012

Status

approved