A088064 a(1)= 9, a(n) =smallest square obtained by prefixing a multiple of n to a(n-1).

9, 49, 1849, 39601849, 3433965039601849, 8431749543719703433965039601849, 21630328864165721709884727523448431749543719703433965039601849, 200826681694245319603106687572622863651082664493457603878954421630328864165721709884727523448431749543719703433965039601849

Offset

1,1

Links

Table of n, a(n) for n=1..8.

Example

a(2) = 49, a(3) = 1849 = 43^2 is obtained by prefixing 18 =3*6, to 49.

Crossrefs

Cf. A088063, A088065.

Sequence in context: A188140 A050632 A050638 * A080812 A276239 A116169

Adjacent sequences: A088061 A088062 A088063 * A088065 A088066 A088067

Keyword

base,nonn

Author

Amarnath Murthy, Sep 21 2003

Extensions

More terms from David Wasserman, Jul 01 2005

Status

approved