login
A276773
Triangle read by rows: Number of ideals in Partial Brauer Monoid PB_n.
0
1, 1, 2, 4, 8, 9, 16, 41, 50, 51, 81, 225, 306, 322, 323, 441, 1341, 1966, 2162, 2187, 2188, 2601, 8377, 13138, 15074, 15474, 15510, 15511, 16129, 54545, 90266, 107955, 112855, 113584, 113633, 113634
OFFSET
0,3
LINKS
I Dolinka, J East, RD Gray, Motzkin monoids and partial Brauer monoids, arXiv preprint arXiv:1512.02279, 2015. See Table 2.
EXAMPLE
Triangle begins:
1,
1,2,
4,8,9,
16,41,50,51,
81,225,306,322,323,
441,1341,1966,2162,2187,2188,
2601,8377,13138,15074,15474,15510,15511,
16129,54545,90266,107955,112855,113584,113633,113634,
...
CROSSREFS
Sequence in context: A065391 A161792 A111261 * A294441 A246347 A255717
KEYWORD
nonn,tabl
AUTHOR
N. J. A. Sloane, Sep 17 2016
STATUS
approved