A077364 Largest n-digit square whose external digits as well as internal digits form a square, or 0 if no such number exists.

9, 81, 841, 0, 38416, 405769, 8003241, 82246761, 0, 1021697296, 86925318561, 119013960256, 6323524974244, 60207636572164, 472453565584009, 0, 85832135162345961, 0, 0, 0, 617801116917258936964, 3633816317608493633296, 0

Offset

1,1

Links

Max Alekseyev, Table of n, a(n) for n = 1..91

Crossrefs

Cf. A077355, A077356, A077357, A077363.

Sequence in context: A181581 A137062 A001514 * A077486 A233021 A366273

Adjacent sequences: A077361 A077362 A077363 * A077365 A077366 A077367

Keyword

base,nonn

Author

Amarnath Murthy, Nov 05 2002

Extensions

More terms from Erich Friedman, Aug 08 2005

More terms from Max Alekseyev, Apr 24 2010

Status

approved