OFFSET
3,2
COMMENTS
Partial sums of number of labeled 2-connected minimally 2-edge-connected graphs by nodes. The only prime in the partial sum values shown is 281.
FORMULA
a(n) = SUM[i=3..n] A054595(i).
EXAMPLE
a(6) = 1 + 3 + 22 + 255 = 281 is prime.
CROSSREFS
KEYWORD
nonn
AUTHOR
Jonathan Vos Post, May 09 2010
STATUS
approved