OFFSET
0,5
COMMENTS
q-analog of A000296.
LINKS
David Ellerman, The number of direct-sum decompositions of a finite vector space, arXiv:1603.07619 [math.CO], 2016.
Kent E. Morrison, Integer Sequences and Matrices Over Finite Fields, Journal of Integer Sequences, Vol. 9 (2006), Article 06.2.1
MATHEMATICA
nn = 15; q := 2; g[n_] := (q - 1)^n q^Binomial[n, 2] FunctionExpand[QFactorial[n, q]]; G[z_] :=Sum[z^k/g[k], {k, 1, nn}]; Table[g[n], {n, 0, nn}] CoefficientList[
Series[Exp[G[z] - z], {z, 0, nn}], z]
CROSSREFS
KEYWORD
nonn
AUTHOR
Geoffrey Critzer, Jul 19 2017
STATUS
approved