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A059577
Main diagonal of the array A059574.
0
1, 4, 87, 4239, 385422, 56304887, 12069075787, 3566873953872, 1389853778362041, 690363881963396569, 425768137345317003930, 319198739428765958327137, 285884881894650500659218725, 301473688731974642805982034540, 369723877220104937359593829963363
OFFSET
1,2
CROSSREFS
Sequence in context: A116320 A220277 A122209 * A239007 A254652 A028554
KEYWORD
easy,nonn
AUTHOR
Floor van Lamoen, Jan 23 2001
EXTENSIONS
More terms from Sean A. Irvine, Sep 29 2022
STATUS
approved