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A002719
Erroneous version of
A020554
.
(Formerly M3029 N1228)
1
1, 3, 16, 139, 1750, 29388, 623909
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OFFSET
1,2
REFERENCES
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
LINKS
Table of n, a(n) for n=1..7.
L. Comtet,
Birecouvrements et birevêtements d’un ensemble fini
, Studia Sci. Math. Hungar 3 (1968): 137-152. [Annotated scanned copy. Warning: the table of v(n,k) has errors.]
CROSSREFS
Sequence in context:
A230318
A006057
A305472
*
A020554
A062874
A321239
Adjacent sequences:
A002716
A002717
A002718
*
A002720
A002721
A002722
KEYWORD
dead
AUTHOR
N. J. A. Sloane
, Oct 20 2015
STATUS
approved
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Last modified April 25 01:35 EDT 2024. Contains 371964 sequences. (Running on oeis4.)