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A119639 Related to number of reachable pairs in a digraph (see Rao article for details). 1
1, 3, 6, 11, 17, 25, 34, 47, 59, 74, 91, 109, 129, 152, 176, 202, 229, 259, 290, 323, 358, 396, 435, 476, 518, 562, 609, 657, 707, 759, 812, 869, 927, 987, 1048, 1111, 1176, 1244, 1313, 1384, 1457, 1532, 1609, 1689, 1770, 1853, 1937, 2023, 2111 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

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: A263807 A273140 A320272 * A281376 A247586 A107957

Adjacent sequences:  A119636 A119637 A119638 * A119640 A119641 A119642

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Jul 27 2006

STATUS

approved

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Last modified May 23 11:01 EDT 2019. Contains 323513 sequences. (Running on oeis4.)