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A268215
Coefficients of e.g.f. for numbers of graded interval orders.
0
1, 1, 3, 13, 99, 1021, 13443
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OFFSET
0,3
LINKS
Table of n, a(n) for n=0..6.
Yan X Zhang,
Four Variations on Graded Posets
, arXiv preprint arXiv:1508.00318 [math.CO], 2015. See Fig. 8.
CROSSREFS
Sequence in context:
A306082
A220897
A267196
*
A323687
A338697
A168417
Adjacent sequences:
A268212
A268213
A268214
*
A268216
A268217
A268218
KEYWORD
nonn
,
more
AUTHOR
N. J. A. Sloane
, Jan 28 2016
STATUS
approved
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Last modified March 29 08:13 EDT 2024. Contains 371265 sequences. (Running on oeis4.)