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A050630 a(n+1) is next smallest nontrivial square containing a(n) as a substring, initial term is 4. 7
4, 49, 1849, 18496, 103184964, 7383508103184964, 544680602158273835081031849649 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

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

FORMULA

a(n) = A050631(n)^2.

CROSSREFS

Starting with a(2)=49, the sequence is identical A050632.

Cf. A050631, A048559, A050636.

Sequence in context: A067717 A067714 A068178 * A080808 A284328 A087588

Adjacent sequences:  A050627 A050628 A050629 * A050631 A050632 A050633

KEYWORD

nonn,base,more

AUTHOR

Patrick De Geest, Jul 15 1999

EXTENSIONS

a(7) from Max Alekseyev, Feb 15 2012

STATUS

approved

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Last modified October 25 17:22 EDT 2021. Contains 348255 sequences. (Running on oeis4.)