A050632 a(n+1) is next smallest nontrivial square containing a(n) as a substring, initial term is 9.

9, 49, 1849, 18496, 103184964, 7383508103184964, 544680602158273835081031849649

Offset

1,1

Links

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

Formula

a(n) = A050633(n)^2.

Crossrefs

Starting with a(2)=49, the sequence is identical to A050630.

Cf. A050633, A048561, A050638.

Sequence in context: A174744 A133049 A188140 * A050638 A088064 A080812

Adjacent sequences: A050629 A050630 A050631 * A050633 A050634 A050635

Keyword

nonn,base,more

Author

Patrick De Geest, Jul 15 1999

Extensions

a(7) from Max Alekseyev, Feb 15 2012

Status

approved