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A176430 Integers equal to sqrt(A174864/4). 1
3, 21, 903, 1631721, 5325028475403, 56711856527710922180500221, 82753323662259982099234097722219590008756576353188748920925694383267934319786203404455994065868822592721 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(n) is divisible by 3.

a(n+1)/a(n)= A000058(n) [From Giovanni Teofilatto, Apr 18 2010]

LINKS

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

CROSSREFS

Cf. A174864, A176349.

Sequence in context: A162924 A079269 A127104 * A327037 A144621 A288567

Adjacent sequences:  A176427 A176428 A176429 * A176431 A176432 A176433

KEYWORD

nonn

AUTHOR

Giovanni Teofilatto, Apr 17 2010

STATUS

approved

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Last modified August 22 11:56 EDT 2019. Contains 326176 sequences. (Running on oeis4.)