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A091818 Sum of even proper divisors of 2n. Sum of the even divisors of 2n that are less than 2n. 0
0, 2, 2, 6, 2, 12, 2, 14, 8, 16, 2, 32, 2, 20, 18, 30, 2, 42, 2, 44, 22, 28, 2, 72, 12, 32, 26, 56, 2, 84, 2, 62, 30, 40, 26, 110, 2, 44, 34, 100, 2, 108, 2, 80, 66, 52, 2, 152, 16, 86 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..50.

EXAMPLE

The sum of even divisors of 18 that are less than 18 is 8=2+6.

CROSSREFS

Cf. A091570, A074400.

Sequence in context: A099985 A110765 A176991 * A071223 A055934 A096217

Adjacent sequences:  A091815 A091816 A091817 * A091819 A091820 A091821

KEYWORD

easy,nonn

AUTHOR

Mohammad K. Azarian, Mar 07 2004

STATUS

approved

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Last modified May 24 22:42 EDT 2013. Contains 225631 sequences.