OFFSET
1,3
COMMENTS
See A339285 for additional details.
FORMULA
a(n) = Sum_{k=1..n-1} k*A339285(n,k).
PROG
(PARI) \\ See A339285 for VertexWeighted.
seq(n)={subst(deriv(VertexWeighted(n, x, y)), y, 1)}
CROSSREFS
KEYWORD
nonn
AUTHOR
Andrew Howroyd, Nov 30 2020
STATUS
approved