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A082588 a(1)=1, Sum(a(d)^2: d divides n and d<n). +0
1
1, 1, 1, 2, 1, 3, 1, 6, 2, 3, 1, 16, 1, 3, 3, 42, 1, 16, 1, 16, 3, 3, 1, 308, 2, 3, 6, 16, 1, 31, 1, 1806, 3, 3, 3, 532, 1, 3, 3, 308, 1, 31, 1, 16, 16, 3, 1, 96936, 2, 16, 3, 16, 1, 308, 3, 308, 3, 3, 1, 1508, 1, 3, 16, 326, 3442, 3, 31, 1, 16, 3, 31, 1, 378456, 1, 3, 16, 16, 3, 31, 1 (list; graph; listen)
OFFSET

1,4

EXAMPLE

a(12) = a(1)^2 + a(2)^2 + a(3)^2 + a(4)^2 + a(6)^2 = 1^2 + 1^2 +

1^2 + 2^2 + 3^2 = 1 + 1 + 1 + 4 + 9 = 16.

CROSSREFS

Cf. A002033.

Sequence in context: A119606 A034850 A140352 this_sequence A034869 A053222 A129646

Adjacent sequences: A082585 A082586 A082587 this_sequence A082589 A082590 A082591

KEYWORD

nonn

AUTHOR

Reinhard Zumkeller (reinhard.zumkeller(AT)lhsystems.com), May 13 2003

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.


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