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URL: https://oeis.org/A176446

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A176446
Integers equal to sqrt(A176299/400).
0
1, 21, 8841, 1563274461, 48876540809860084881, 47778324830758366441099687810020355768101, 45655366472669229704532780257129479597227844595083706917185803648786109654138692121
OFFSET
1,2
COMMENTS
a(n) is divisible by 21.
CROSSREFS
Sequence in context: A307931 A270873 A263278 * A380792 A135823 A013726
KEYWORD
nonn
AUTHOR
Giovanni Teofilatto, Apr 18 2010
STATUS
approved