A165435 Number of quad-coverings of a set.

1, 1, 5, 81, 4079, 507549, 127126912, 55643064708, 38715666455777, 40095856807088486, 58901884724160709571, 118283825763578012358080, 315297447553856723754810322, 1089117884184737631305395668913, 4778248300569771278502378511288513

Offset: 0

Author

Doron Zeilberger, Sep 18 2009

Keywords

• nonn

Comments

Analogous to A165434. See comments and references there.

Crossrefs

Row 4 of A188392.

Cf. A165434.