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A177451
Partial sums of A054595.
0
1, 4, 26, 281, 3602, 56550, 1121538, 26193063, 693887458, 20808594004, 699641607622, 26001947464541, 1059148042622186, 47015706166302146, 2260884753582320442, 117153802097975691651, 6513779162975806691634
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