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A116501 Numbers n such that the representation of n^2 has the structure dmdmd, where d is a single digit and m a string of digits. 4
264, 238165, 309097, 1052631579, 1104579631, 2076555028, 2105263158, 2209159262, 3004048583, 3157894737, 30762132977, 107438016531, 214876033062, 10909090909091, 21818181818182, 1001889106154509 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..16.

EXAMPLE

309097^2 = 9[5540]9[5540]9.

CROSSREFS

Cf. A116499, A116502.

Sequence in context: A289024 A145639 A285836 * A289745 A289639 A283665

Adjacent sequences:  A116498 A116499 A116500 * A116502 A116503 A116504

KEYWORD

base,nonn

AUTHOR

Giovanni Resta, Feb 18 2006

STATUS

approved

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Last modified August 23 01:14 EDT 2017. Contains 290953 sequences.