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A212651 Smallest integer m > n such that both n*m and (n+1)*(m+1) are squares. 0
3, 49, 242, 48, 1444, 2645, 4374, 6727, 288, 13689, 18490, 24299, 31212, 39325, 48734, 960, 71824, 85697, 101250, 118579, 137780, 158949, 182182, 207575, 2400, 265225, 297674, 332667, 370300, 410669, 453870, 499999, 549152, 601425, 656914, 5040, 777924, 843637, 912950, 985959, 1062760, 1143449, 1228122, 1316875, 1409804, 1507005, 1608574, 1714607, 675, 1681, 2060450 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

a(n) <= n*(4*n+3)^2.

LINKS

Table of n, a(n) for n=0..50.

CROSSREFS

Sequence in context: A041523 A054206 A063777 * A225317 A288527 A269630

Adjacent sequences:  A212648 A212649 A212650 * A212652 A212653 A212654

KEYWORD

nonn

AUTHOR

Max Alekseyev, Apr 14 2013

STATUS

approved

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Last modified July 26 22:10 EDT 2021. Contains 346300 sequences. (Running on oeis4.)