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A158291 The number of numerical sets S with atom monoid A(S) equal to {0,n+1,n+2,n+3,n+4,...} 3
1, 2, 3, 6, 10, 20, 37, 74, 140, 280, 542, 1084, 2118, 4236, 8337, 16674 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Table of n, a(n) for n=1..16.

S. R. Finch, Monoids of natural numbers

S. R. Finch, Monoids of natural numbers, March 17, 2009. [Cached copy, with permission of the author]

J. Marzuola and A. Miller, Counting Numerical Sets with No Small Atoms, arXiv:0805.3493 [math.CO], 2008.

J. Marzuola and A. Miller, Counting numerical sets with no small atoms, J. Combin. Theory A 117 (6) (2010) 650-667.

CROSSREFS

Cf. A066062.

Sequence in context: A066062 A008929 A164047 * A045690 A007148 A093371

Adjacent sequences:  A158288 A158289 A158290 * A158292 A158293 A158294

KEYWORD

nonn,more

AUTHOR

Steven Finch, Mar 15 2009

STATUS

approved

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Last modified August 4 12:54 EDT 2020. Contains 336201 sequences. (Running on oeis4.)