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A337717 Number of connected graphs, where vertices are labeled with positive integers summing to n, and where identically labeled vertices are indistinguishable and cannot be connected with an edge. 3
1, 1, 1, 2, 3, 6, 12, 28, 65, 173, 496, 1527, 5092, 18669, 74601, 325206, 1572191, 8487232, 50962240, 343162568, 2627538015, 22853622935, 225118360626, 2539559186827, 33036542404276, 491977100299885, 8394837931641837 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,4
LINKS
CROSSREFS
Inverse Euler transform of A337716.
Sequence in context: A014280 A073431 A273873 * A003317 A145062 A300323
KEYWORD
nonn
AUTHOR
Max Alekseyev following a suggestion from Franklin T. Adams-Watters, Sep 16 2020
STATUS
approved

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Last modified February 23 06:06 EST 2024. Contains 370267 sequences. (Running on oeis4.)