A331159 Number of GP-iposets (gluing-parallel posets with interfaces) with n points.

1, 4, 16, 74, 419, 2980, 26566, 289279, 3726311

Offset

0,2

Links

Table of n, a(n) for n=0..8.

Uli Fahrenberg, Christian Johansen, Georg Struth, Ratan Bahadur Thapa, Generating Posets Beyond N, arXiv:1910.06162 [cs.FL], 2019.

Uli Fahrenberg, Christian Johansen, Georg Struth, Krzysztof Ziemiański, Posets with Interfaces for Concurrent Kleene Algebra, arxiv:2106.10895 [cs.FL], 2021.

Crossrefs

The seven sequences in the table of Uli Fahrenberg et al., 2019, are A000112, A003430, A079566, A331156, A331157, A331158, A331159.

Sequence in context: A109957 A366498 A306495 * A101205 A301577 A324171

Adjacent sequences: A331156 A331157 A331158 * A331160 A331161 A331162

Keyword

nonn,more

Author

N. J. A. Sloane, Jan 16 2020, following a suggestion from Michael De Vlieger.

Extensions

a(7)-a(8) from Uli Fahrenberg, Jun 22 2021

Status

approved