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A086898 Sum_{d|n} tau(d-1). 0
0, 1, 2, 3, 3, 5, 4, 5, 6, 7, 4, 9, 6, 7, 9, 9, 5, 11, 6, 11, 12, 9, 4, 13, 11, 10, 10, 13, 6, 17, 8, 11, 12, 10, 11, 19, 9, 9, 12, 17, 8, 19, 8, 13, 19, 11, 4, 19, 14, 18, 13, 16, 6, 17, 15, 19, 16, 11, 4, 25, 12, 11, 20, 17, 16, 23, 8, 14, 12, 21, 8, 25, 12, 12, 21, 17, 14, 22, 8, 23, 20 (list; graph; refs; listen; history; internal format)
OFFSET

1,3

CROSSREFS

Cf. A000005, A049822.

Sequence in context: A126571 A080391 A116922 * A123031 A159070 A088241

Adjacent sequences:  A086895 A086896 A086897 * A086899 A086900 A086901

KEYWORD

nonn

AUTHOR

Vladeta Jovovic (vladeta(AT)eunet.rs), Aug 23 2003

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Last modified February 18 00:14 EST 2012. Contains 206085 sequences.