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A219542 Numbers n such that n^2 is a concatenation of 3 nonzero squares, leading zeros not allowed. 1
12, 21, 37, 44, 107, 108, 120, 129, 191, 204, 209, 210, 223, 306, 315, 342, 343, 345, 370, 408, 413, 440, 501, 642, 696, 804, 955, 959, 982, 995, 1002, 1044, 1063, 1065, 1070, 1080, 1107, 1169, 1200, 1275, 1281, 1290, 1301, 1306, 1315, 1349, 1385, 1503, 1910 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Zak Seidov, Table of n, a(n) for n = 1..1500

EXAMPLE

a(1) = 12: 12^2 = 144, 1 = 1^2, 4 = 2^2, 4 = 2^2;

a(1500) = 3176900^2 = 100, 9, 2693610000, 100 = 10^2, 9 = 3^2, 2693610000 = 51900^2.

CROSSREFS

Cf. A039686, A048375, A048646, A145848, A147608.

Sequence in context: A241503 A226186 A325301 * A137480 A316267 A228766

Adjacent sequences:  A219539 A219540 A219541 * A219543 A219544 A219545

KEYWORD

nonn,base

AUTHOR

Zak Seidov, Nov 22 2012

STATUS

approved

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Last modified October 14 06:52 EDT 2019. Contains 327995 sequences. (Running on oeis4.)