OFFSET
1,2
COMMENTS
The unlikely-looking symbol "+:=" in the MAGMA code is in fact correct. - N. J. A. Sloane, Feb 02 2009
FORMULA
a(n) = Sum_{k=1..n} k * A064230(n,k). - Alois P. Heinz, Jun 18 2022
PROG
(Magma) for a in [1..5] do b := 0; for c in CartesianPower([0, 1], a^2) do b +:= Rank(Matrix(a, a, [aa : aa in c])); end for; print b; end for;
CROSSREFS
KEYWORD
hard,more,nonn
AUTHOR
Tom Womack (tom(AT)womack.net), Aug 21 2003
EXTENSIONS
a(6) from Alois P. Heinz, Jun 18 2022
STATUS
approved