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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 (list; graph; refs; listen; history; text; internal format)
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.

LINKS

Table of n, a(n) for n=3..19.

FORMULA

a(n) = SUM[i=3..n] A054595(i).

EXAMPLE

a(6) = 1 + 3 + 22 + 255 = 281 is prime.

CROSSREFS

Cf. A054595, A054317, A001072, A054596.

Sequence in context: A079473 A145164 A113078 * A304864 A167811 A156306

Adjacent sequences:  A177448 A177449 A177450 * A177452 A177453 A177454

KEYWORD

nonn

AUTHOR

Jonathan Vos Post, May 09 2010

STATUS

approved

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Last modified January 24 08:48 EST 2022. Contains 350534 sequences. (Running on oeis4.)