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Search: id:A117678
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A117678 Squares for which the multiplicative digital root is also a square. +0
1
0, 1, 4, 9, 25, 100, 169, 196, 225, 256, 400, 529, 576, 625, 676, 784, 900, 961, 1024, 1089, 1156, 1225, 1296, 1521, 1600, 2025, 2209, 2304, 2401, 2500, 2601, 2704, 2809, 2916, 3025, 3136, 3600, 3844, 3969, 4096, 4225, 4356, 4489, 4900, 5041, 5184, 5329 (list; graph; listen)
OFFSET

0,3

CROSSREFS

Cf. A000290.

Sequence in context: A121648 A133022 A028400 this_sequence A055851 A025494 A087374

Adjacent sequences: A117675 A117676 A117677 this_sequence A117679 A117680 A117681

KEYWORD

nonn,base

AUTHOR

Luc Stevens (lms022(AT)yahoo.com), Apr 12 2006

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.


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