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A147648 Number of distinct even superperfect numbers dividing n. 0
0, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 4, 0, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2 (list; graph; refs; listen; history; internal format)
OFFSET

1,4

COMMENTS

Also, numbers of distinct superperfect numbers dividing n, if there are no odd superperfect numbers.

CROSSREFS

Cf. A001221, A019279, A061652, A080225, A147645.

Sequence in context: A070105 A111397 A131743 * A113686 A192033 A193403

Adjacent sequences:  A147645 A147646 A147647 * A147649 A147650 A147651

KEYWORD

easy,nonn

AUTHOR

Omar E. Pol (info(AT)polprimos.com), Nov 09 2008

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Last modified February 16 01:31 EST 2012. Contains 205860 sequences.