

A060021


Maximal size of a subset of any Abelian group of order n that does not contain 0 and fails to span the group nontrivially.


1



1, 1, 2, 2, 3, 3, 4, 4, 4, 5, 5, 5, 6, 6, 7, 6, 8, 7, 9
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OFFSET

2,3


REFERENCES

J. R. Griggs (griggs(AT)math.sc.edu), personal communication, Apr 24, 2001.


LINKS

Table of n, a(n) for n=2..20.
J. R. Griggs, Spanning subset sums for finite Abelian groups, Discrete Math., 229 (2001), 8999.


CROSSREFS

Cf. A060020.
Sequence in context: A084500 A084557 A024417 * A000006 A061017 A248170
Adjacent sequences: A060018 A060019 A060020 * A060022 A060023 A060024


KEYWORD

nonn,more


AUTHOR

N. J. A. Sloane, Mar 17 2001


EXTENSIONS

n=21 is the first open case  it is either 7 or 8.


STATUS

approved



