A212651 Smallest integer m > n such that both n*m and (n+1)*(m+1) are squares.

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

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: A054206 A063777 A359886 * A225317 A288527 A269630

Adjacent sequences: A212648 A212649 A212650 * A212652 A212653 A212654

Keyword

nonn

Author

Max Alekseyev, Apr 14 2013

Status

approved