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A165435 Number of quad-coverings of a set. 1
1, 1, 5, 81, 4079, 507549, 127126912, 55643064708, 38715666455777, 40095856807088486, 58901884724160709571, 118283825763578012358080, 315297447553856723754810322, 1089117884184737631305395668913, 4778248300569771278502378511288513 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

COMMENTS

Analogous to A165434. See comments and references there.

LINKS

Table of n, a(n) for n=0..14.

CROSSREFS

Sequence in context: A009756 A188419 A009634 * A197443 A280220 A280675

Adjacent sequences:  A165432 A165433 A165434 * A165436 A165437 A165438

KEYWORD

nonn

AUTHOR

Doron Zeilberger, Sep 18 2009

STATUS

approved

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Last modified June 28 16:56 EDT 2017. Contains 288839 sequences.