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A119638 Related to number of reachable pairs in a digraph (see Rao article for details). 1
0, 1, 4, 6, 12, 20, 24, 35, 48, 63, 80, 88, 108, 130, 154, 180, 192, 221, 252, 285, 320, 357, 396, 414, 456, 500, 546, 594, 644, 696, 720, 775, 832, 891, 952, 1015, 1080, 1147, 1178, 1248, 1320, 1394, 1470, 1548, 1628, 1710, 1794, 1833, 1920 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

REFERENCES

A. R. Rao, The number of reachable pairs in a digraph, Discr. Math., 306 (2006), 1595-1600.

LINKS

A. R. Rao, Table of n, a(n) for n = 1..200

CROSSREFS

Sequence in context: A057339 A160856 A019445 * A178547 A168674 A110935

Adjacent sequences:  A119635 A119636 A119637 * A119639 A119640 A119641

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 27 2006

STATUS

approved

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Last modified June 24 05:39 EDT 2019. Contains 324318 sequences. (Running on oeis4.)