OFFSET
3,1
COMMENTS
Counts do not include the null graph.
LINKS
Andrew Howroyd, Table of n, a(n) for n = 3..1000
Eric Weisstein's World of Mathematics, Graph Minor
FORMULA
a(n) = A026905(n) + n - 2. - Andrew Howroyd, Mar 01 2023
PROG
(PARI) a(n)=if(n<3, 0, sum(k=1, n, numbpart(k)) + n - 2) \\ Andrew Howroyd, Mar 01 2023
CROSSREFS
KEYWORD
nonn
AUTHOR
Eric W. Weisstein, Apr 30 2022
EXTENSIONS
Terms a(30) and beyond from Andrew Howroyd, Mar 01 2023
STATUS
approved