A256973 Irregular triangle read by rows: row n gives coefficients of polynomial NT_{n,mu}(q) in powers of q.

1, 1, 1, 1, 1, 3, 1, 1, 1, 6, 6, 7, 2, 1, 1, 1, 10, 20, 31, 23, 15, 13, 3, 2, 1, 1, 1, 15, 50, 106, 135, 126, 119, 66, 46, 25, 19, 5, 3, 2, 1, 1, 1, 21, 105, 301, 561, 736, 850, 726, 603, 418, 299, 174, 101, 65, 33, 27, 7, 5, 3, 2, 1, 1, 1, 28, 196, 742, 1870, 3311, 4820, 5541, 5675, 5007, 4055, 3093, 2116, 1461, 888, 646, 338, 217, 126, 80, 44, 35, 11, 7, 5, 3, 2, 1, 1

Offset

1,6

Comments

The triangles in Tables 2 and 3 of Jones et al., 2013, should also be entered into the OEIS.

Links

Table of n, a(n) for n=1..93.

M. Jones, S. Kitaev, J. Remmel, Frame patterns in n-cycles, arXiv preprint arXiv:1311.3332, 2013. Also Discrete Math., 338 (2015), 1197-1215.

Example

Triangle begins:
1,
1,
1,1,
1,3,1,1,
1,6,6,7,2,1,1,
1,10,20,31,23,15,13,3,2,1,1,
1,15,50,106,135,126,119,66,46,25,19,5,3,2,1,1,
...

Crossrefs

Sequence in context: A080002 A291722 A297672 * A058057 A124372 A126470

Adjacent sequences: A256970 A256971 A256972 * A256974 A256975 A256976

Keyword

nonn,tabf

Author

N. J. A. Sloane, Apr 21 2015

Extensions

Corrected and extended by Michel Marcus, May 28 2019

Status

approved