OFFSET
1,2
COMMENTS
This triangle underlies the array entry A090214 ((4,4)-generalized Stirling2).
LINKS
R. B. Corcino, K. J. M. Gonzales, M. J. C. Loquias and E. L. Tan, Dually weighted Stirling-type sequences, arXiv preprint arXiv:1302.4694 [math.CO], 2013.
R. B. Corcino, K. J. M. Gonzales, M. J. C. Loquias and E. L. Tan, Dually weighted Stirling-type sequences, Europ. J. Combin., 43, 2015, 55-67.
Wolfdieter Lang, First 8 rows.
FORMULA
EXAMPLE
[1]; [24,1]; [576,144,1]; [13824,17856,504,1]; ...
MATHEMATICA
max = 10; f[m_] := 1/Product[1-FactorialPower[r+3, 4]*x, {r, 1, m}]; col[m_] := CoefficientList[f[m] + O[x]^(max-m+1), x]; a[n_, m_] := col[m][[n-m+1]]; Table[a[n, m], {n, 1, max}, {m, 1, n}] // Flatten (* Jean-François Alcover, Sep 01 2016 *)
CROSSREFS
KEYWORD
AUTHOR
Wolfdieter Lang, Dec 01 2003
EXTENSIONS
More terms coming from a-file added by Michel Marcus, Feb 08 2023
STATUS
approved