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A068177 a(1) = 3; for n>1, a(n) is the smallest square > a(n-1) obtained by inserting digits into a(n-1). 4
3, 36, 361, 32761, 323761, 32137561, 3211375561, 321113755561, 32111137555561, 3211111375555561, 321111113755555561, 32111111137555555561, 3211111111375555555561, 321111111113755555555561 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

a(2)=36, hence a(3) = 361 the smallest square formed from 36.

CROSSREFS

Cf. A068175, A068176, A091876 gives square roots.

Sequence in context: A026121 A055303 A274403 * A249894 A099670 A259131

Adjacent sequences:  A068174 A068175 A068176 * A068178 A068179 A068180

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Feb 25 2002

EXTENSIONS

Corrected and extended by Ray Chandler, Oct 11 2003

STATUS

approved

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Last modified December 6 14:47 EST 2019. Contains 329806 sequences. (Running on oeis4.)