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1, 4, 26, 281, 3602, 56550, 1121538, 26193063, 693887458, 20808594004, 699641607622, 26001947464541, 1059148042622186, 47015706166302146, 2260884753582320442, 117153802097975691651, 6513779162975806691634
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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3,2
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COMMENTS
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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.
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LINKS
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FORMULA
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EXAMPLE
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a(6) = 1 + 3 + 22 + 255 = 281 is prime.
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CROSSREFS
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KEYWORD
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nonn
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AUTHOR
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STATUS
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approved
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