A158291 The number of numerical sets S with atom monoid A(S) equal to {0,n+1,n+2,n+3,n+4,...}.

1, 2, 3, 6, 10, 20, 37, 74, 140, 280, 542, 1084, 2118, 4236, 8337, 16674

Offset: 1

Author

Steven Finch, Mar 15 2009

Keywords

• nonn
• more

Links

• 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.