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A165435 Number of quad-coverings of a set. 2
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
CROSSREFS
Row 4 of A188392.
Cf. A165434.
Sequence in context: A336807 A188419 A009634 * A197443 A337852 A280220
KEYWORD
nonn
AUTHOR
Doron Zeilberger, Sep 18 2009
STATUS
approved

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Last modified March 29 10:44 EDT 2024. Contains 371268 sequences. (Running on oeis4.)